常见单位转换关系式

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单位换算公式详解

单位换算公式详解

单位换算公式详解单位换算是物理学中常见的问题之一、在解答单位换算的问题之前,我们需要先了解一些单位间的转换关系。

下面将对常见的单位换算公式进行详细的解读。

1.长度单位换算公式:1米(m)= 100厘米(cm)= 1000毫米(mm)1千米(km)= 1000米(m)1英尺(ft)≈ 30.48厘米(cm)1英寸(in)≈ 2.54厘米(cm)当给定一个长度的值时,我们可以使用上述公式进行相应单位的换算。

例如,要将100厘米换算成米,可以用公式1米(m)= 100厘米(cm)来计算,即 100厘米÷ 100 = 1米。

2.面积单位换算公式:1英亩(acre)≈ 4046.86平方米(m²)3.容积单位换算公式:1升(L)= 1000立方厘米(cm³)当给定一个容积的值时,我们可以使用上述公式进行相应单位的换算。

例如,要将1000立方厘米换算成升,可以用公式1升(L)= 1000立方厘米(cm³)来计算,即 1000立方厘米÷ 1000 = 1升。

4.时间单位换算公式:1小时(h)= 60分钟(min)1分钟(min)= 60秒(s)1天(day)= 24小时(h)当给定一个时间的值时,我们可以使用上述公式进行相应单位的换算。

例如,要将120分钟换算成小时,可以用公式1小时(h)= 60分钟(min)来计算,即 120分钟÷ 60 = 2小时。

5.速度单位换算公式:速度等于位移除以时间,常用单位包括米每秒(m/s)、千米每小时(km/h)、英里每小时(mph)等。

以下是常见的速度单位换算公式:1千米每小时(km/h)≈ 0.2778米每秒(m/s)1英里每小时(mph)≈ 0.447米每秒(m/s)当给定一个速度的值时,我们可以使用上述公式进行相应单位的换算。

例如,要将80千米每小时换算成米每秒,可以用公式1千米每小时(km/h)≈ 0.2778米每秒(m/s)来计算,即 80乘以0.2778 = 22.224米每秒。

初中单位换算公式大全

初中单位换算公式大全

初中单位换算公式大全很多同学在做题时都会需要进行公式换算,整理了一些初中常用单位的换算。

单位换算简介一、长度单位换算长度单位中最常见的有千米(km)、米(m)、分米(dm)、厘米(cm)、毫米(mm),他们之间的换算关系为:1千米(km)=1000米(m),1米(m)=10分米(dm)。

1千米(km)=1000米(m)=10000分米(dm)=1000 00厘米(cm)=1000 000毫米(mm)1米(m)=10分米(dm)=100厘米(cm)=1000毫米(mm)1分米(dm)=10厘米(cm)=100毫米(mm)1厘米(cm)=10毫米(mm)二、时间单位换算1世纪=100年 1年=12个月世纪:计算年代的单位,一百年为一个世纪。

大月:指阳历(公历)有三十一天的月份,公历每年一﹑三﹑五﹑七﹑八﹑十﹑十二这七个月为大月,均三十一天。

小月:指阳历一个月三十天或农历一个月二十九天的月份。

小月(30天)的有:4、6、9、11月。

平年:阳历或阴历中无闰日的年,或阴阳历中无闰月的年。

平年全年365天,闰年全年366天,平年2月28天,闰年2月29天。

闰年:阳历或阴历中有闰日的年,或阴阳历中有闰月的年。

1日=24小时 1时=60分日:以地球自转周期为基准的时间单位,等于86400s。

分:时间的辅助单位。

1分=60秒 1时=3600秒秒:时间的基本单位。

三、人民币单位换算方法:人民币单位之间是十进制关系。

1元=10角元:货币单位,人民币是中华人民共和国大陆地区的法定货币符号,人民币的单位为元,人民币辅币单位为角、分。

人民币货币符号为“¥”,譬如,人民币100元,可写作,RMB¥100(区别于日元),或¥100。

1角=10分角:货币单位,一元钱的十分之一。

1元=100分分:货币单位,一元钱的百分之一。

四、重量单位换算1吨=1000千克 1吨=1000 000克吨:吨是重量单位,公制一吨等于1000公斤:计算船只容积的单位,一吨等于2.83立方米(合100立方英尺)。

单位换算

单位换算

1吨=1000千克 1吨=1000 000克吨:吨是重量单位,公制一吨等于1000公斤:计算船只容积的单位,一吨等于2.83立方米(合100立方英尺)。

1千克=1000克 500克=1斤千克:克,(符号kg或㎏)为国际单位制中量度质量的基本单位,千克也是日常生活中最常使用的基本单位之一。

一千克的定义就是国际千克原器的质量,几乎与一升的水等重。

1千克=1公斤 1公斤=2斤公斤,或称千克,(符号kg或㎏)为国际单位制中量度质量的基本单位,千克也是日常生活中最常使用的基本单位之一。

02 人民币单位之间的换算方法:人民币单位之间是十进制关系。

1元=10角元:货币单位,人民币是中华人民共和国大陆地区的法定货币符号,人民币的单位为元,人民币辅币单位为角、分。

人民币货币符号为“¥”,譬如,人民币100元,可写作,RMB¥100(区别于日元),或¥100。

1角=10分角:货币单位,一元钱的十分之一。

1元=100分分:货币单位,一元钱的百分之一。

03时间单位换算1世纪=100年 1年=12个月世纪:计算年代的单位,一百年为一个世纪。

大月(31天)有:1\3\5\7\8\10\12月大月:指阳历(公历)有三十一天的月份,公历每年一﹑三﹑五﹑七﹑八﹑十﹑十二这七个月为大月,均三十一天。

小月(30天)的有:4\6\9\11月小月:指阳历一个月三十天或农历一个月二十九天的月份。

平年2月28天,闰年2月29天平年:阳历或阴历中无闰日的年,或阴阳历中无闰月的年。

平年全年365天,闰年全年366天闰年:阳历或阴历中有闰日的年,或阴阳历中有闰月的年。

1日=24小时 1时=60分日:以地球自转周期为基准的时间单位,等于86400s。

分:时间的辅助单位。

1分=60秒 1时=3600秒秒:时间的基本单位。

长度单位换算长度单位中最常见的有千米(km)、米(m)、分米(dm)、厘米(cm)、毫米(mm),他们之间的换算关系为:1千米(km)=1000米(m),1米(m)=10分米(dm)。

常见单位转换关系式

常见单位转换关系式

常见单位转换关系式发布:2008-12-14 10:51 |作者:llljq |来源:管道与设备技术网[url=]Acceleration[/url]foot/second2, meter/second2, gal, galileo, inch/second21 m/s2 =ft/s2 =100 cm/s2 = inch per sec ond squared (in ch/s2)1=m/s2 = cm/s2ft/s2 :1 g = m/s2 = ft/s2[url=]Area[/url]acre, are, barn, foot2, hectare, in ch2, mile2, sect ion, meter2, tow nship, yard2, hectares1 m2 = 1550 in2 = ft2 = yd2 = mile21 ft2 = m2 = 144 in2 = 0,1111 yd2 = mile21 in2 = cm2 = m2 = ft2 = yd2 = mile21 yd2 = m2 = 1,296 in2 = 9 ft2 = mile21 mile2 = m2 = in2 = ft2 = yd2=640 Acres1 acre = 1/640 mile2 = ha (Hectares) = 4, m2 =43,560 . = 4840 .1 km2 = 102 ha2 = 106 m2 = 1010 cm2 = 1012 mm21 ha (Hectare) = 104 m2 = 108 cm2 = 1010 mm2 = Acres1 cm2 = 10-4 m2 = in21 mm2 =1 tow nship = 107 m21 sectio n = 106 m2[url=]De nsity[/url]kg/cubic meter, gram/ce ntimeter3, lmb/cubic in ch, lbm/cubic foot, slug/cubic foot, kilogram/cubic meter, lbm/gallo n (US liq)Den sity Water 1,000 kg/m3 = Lbs./ = Lbs./Gal. = ./Gal.1 lb/ft3 = kg/m3 = g/cm3 = oz/in3 = oz/gal (Imperial) = oz/gal (U.S.) = lb/i n3=27 lb/yd3 = lb/gal (Imperial) = lb/gal = ton /yd31 slug/ft3 = kg/m31 kg/l = lb/ft31 kg/m3 = g/cm3 = oz/in3 = oz/gal (Imperial) = oz/gal (U.S.) = Ib/ft3 = lb/in3=lb/yd3 = lb/gal (Imperial) = lb/gal = to n/yd3[url=]E nergy[/url]British Thermal Un it (Btu), calorie, joule, kilojoule, electro n volt, erg, foot lbf,foot poun dal, kilocalorie, kilowatt hour, watt hour,1 J (Joule) = 0,1020 kpm = kWh = kcal = ft lbf = 1 (kg m2)/s2 = 1 watt seco nd = 1Nm = 1 ft lb = Btu1 kpm = J = kWh = kcal = ft lbf = Btu1 kWh = J = kpm = kcal = ft lbf = Btu1 kJ = 1 kNm = 1kWs = 103 J = Btu = ft lbf = kcal1 Btu (British thermal unit) = 1, J = k pm = kWh = kcal = ft lbf = ergs = 252 cal =watt hour1 cal = J1 kcal = 4186,8 J = 426,9 kp m = kWh = ft lbf = Btu = 1,000 cal1 ft lbf (foot pound force) = J = kp m = kWh = kcal = Btu1 hp h (horse power hour) = J = kWh1 erg = 1 (g cm2)/s2 = 10-7 J1 eV = J1 Q = 1018 Btu = J1 Quad = 1015 Btu1 kg m = ft lb = Btu = Joule[url=]E nergy per un it mass[/url]1 kJ/kg = 1 J/g = Btu/ lbm = kcal/kg[url=]Flow[/url] - see Volume flow [url=]Force[/url]dyne, kilogram force (kgf), kilopound force, kip,lbf (po und force), ounce force (avoirdupois), poun dal, n ewt on1 N (Newt on) = kp = pdl = lbf = lbf = 1 (kg m)/s2 = 105 dyn = 1/ kgf1 lbf (Po und force) = N = kp = pdl = dyn1 dyn = 1 (g cm)/s21 kg has a weight of 1 kp1 kp (Kilopo nd) = N = Ibf = pdl1 pdl (Pou ndal) = N = kp = Ibf[url=]Heat flow rate[/url]1 Btu/sec = 1, W1 kW (kJ/s) = kpm/s = kcal/h = 3,413 Btu/h = hk = hp = 738 ft lb/s = 1,000 J/s =J/h1 kpm/s =kW =kcal/h =Btu/h = :hk = hp = ft lb/s1 kcal/h =kW =kpm/s =Btu/h = :hk = hp = ft lb/s1 Btu/h = =kW = =kpm/s = = kcal/h : =hk = hp = ft lb/s1 kcal/h =kW1 hk (metric horse power)= kW = kpm/s = kcal/h =2,510 Btu/h = hp = ft lb/s1 hp = kW = kpm/s = kcal/h = 2,545 Btu/h =hk =ft lb/s1 ftlb/s : =kW : =kpm/s : = kcal/h : =Btu/h : =hk : =hp[url=]Heat flux[/url]1 Btu/ft2 = kcal/m2 = J/m2K1 Btu/ ft2 h = W/m21 Btu/ft2 oF = kcal/m2K = J/m2K1 kcal/m2 = Btu/ft21 kcal/m2K = Btu/ft2oF[url=]Heat gen erati on per un it volume[/url]1 Btu/ft3 = kcal/m3 = J/m31 Btu/ft3 h = W/m31 kcal/m3 = Btu/ft3[url=]Heat gen erati on per un it mass[/url]1 Btu/lb = kcal/kg = 2,326 J/kg 1 kcal/kg = Btu/lb[url=]Heat tran sfer coefficie nt[/url]1 Btu/ft2 h oF = W/m2 K = kcal/h m2 oC1 W/m2K = kcal/h m2 oC = Btu/ ft2 h oF1 kcal/h m2 oC = W/m2K = Btu/ ft2 h oF[url=]Hydraulic Gradie nts[/url]1 ftH2O/100 ft = psi/100 ft = kPa/100 m = 1000 mmH2O/100 m1 psi/100 ft = ftH2O/100 ft = 2288 mmH2O/100 ft = kPa/100 m[url=]Le ngth[/url]feet, meters, cen timeters, kilometers, miles, furion gs, yards, micrometers, in ches,a ngstrom, cubit, fathom, foot, han d, league, light year, micron, mil, n autical mile, rod,1 m (meter) = ft = in = yd = mile1 km = mile = 3281 ft = 1094 yds1 in (in ch) = mm = cm = m = ft = yd = mile1 ft (foot) = m = 12 in = yd = mile = cm = mm1 mm = 10-3 m1 cm = 10-2 m = in = ft1 mm = in1 …(…ngstrm) =-10 m1 mile = km = 1, m = 63,346 in = 5,280 ft = 1,760 yd1 mil (Norway and Swede n) = 10 kilometres1 nm (n autical mile) = 1,852 metres = mile = feet1 yd (yard) = m = 36 in = 3 ft = mile1 Furlo ng = 660 feet = 40 rods = 1/8 mile1 rod = yards1 land league = 3 miles1 Fathom = 6 feet = meters[url=]Mass[/url], weightpo un ds, kilograms, grams, oun ces, grains, tons (lo ng), tons (short), tons(metric), carat, grain, ounce mass, pound mass (lbm), slug, tonne1 kg = 1,000 g = lb = slug 1 lb = 16 oz = kg = g = 7000 grains = slug1 slug = kg = Ibm1 grain = lb = g1 g = gra ins = oz = lb1 to nne = 103 kg = 106 g = 109 mg = to ns1 qt = liters1 Ton = 2000 Lbs. = 907 kg1 long ton = 2240 pou nds1 oz (ounce) = g = gra ins1 troy pound = 12 troy ounces1 scruple = 20 grains1 dram = 3 scruples1 apothecary ounce = 8 drams1 apothecary pound = 12 apothecary ounces1 penny weight = 24 grains1 Gal. H2O = Lbs. H2ODensity, Specific Weight and Specific Gravity - An introduction and definition of density, specific weight and specific gravity. Formulas with examples.[url=]Mass flow rate[/url]1 lb/h = kg/s1 lb/s = kg/s1 lb/min = kg/s = kg/s1 kg/s = 3,600 kg/h = lb/min1 kg/h = kg/s = lb/minMome nt of In ertia1 kg m2 = 10000 kg cm2 = 54675 ounce in2 = lb in2 = lb ft2[url=]Power[/url]horsepower, kilowatt, watt,btu/sec ond, calorie/sec ond, foot lbf/sec ond,kilocalorie/sec ond1 W = 1 kg m2/s3 = 1 Nm/s = 1 J/s1 kW = 1,000 Watts = 3,412 Btu/h = 550 British hp = British hp = 103/ kgf m/s = ftlbf/s = 103/ 75) metric hp1 hp (En glish horse power) = W = kW = 550 ft lb/s = 2,545 Btu/h = ft lb/m = metric horse power ~= KVA1 metric horse power = 736 W = 75 kg m/s = En glish horse power1 refrigerati on Ton = 12,000 Btu/h cooli ng = kW = 3, k Calories/h1 cooling tower Ton = 15,000 Btu/h = 3,782 k Calories/h1 Therm = 100,000 Btu/h1 ft lb/s = W1 Btu/s = W1 Btu/h = 1 Btuh = W = MBH[url=]Power per unit area[/url]1 W/m2 = Btu/(h ft2) = kcal/(h m2)[url=]Pressure[/url]atmosphere, cen timeters of mercury, foot of water, bar, barye, cen timeter of water, dyn e/ce ntimeter2, inch of mercury, inch of water, kgf/ce ntimeter2, kgf/meter2, lbf/foot2, lbf/in ch2 (psi), millibar, millimeter of mercury, pascal, torr, n ewto n/meter2Stan dard Atmospheric Pressure 1 atm = kN/m2 = kPa = psia = 0 psig = in Hg =760 torr = = (Water Gauge) = Lbs./.1 N/m2 = 1 Pa = lb/in2 = 1x10-5 bar = in water = ft water = mm water = in mercury = mm mercury = kg/m2 = atm1 Pa = 10-6 N/mm2 = 10-5 bar = kp/m2 = m H2O = atm = psi (lbf/i n2)1 N/mm2 = 106 Pa = 10 bar = kp/m2 = m H2O =atm = psi (lbf/in2)1 mmHg = 1 torr = lb/i n21 atm = 101,325 Pa (N/m2) = kN/m2 = kp/m2 = kp/cm2 = :bar = psi (lb/i n2)=in H2O at 62 0F oC) = ft H2O at 62 0F oC)= m H2O at 62 0F oC) =in mercuryat 62 0F oC) = 760 mm mercury at 62 0F oC)= 760 torr1 bar = 105 Pa (N/m2) = N/mm2 = 10,197 kp/m2 : = m H2O =atm = psi (lbf/i n2)= 106 dyn/cm2 = 750 mmHg1 kp/m2 = Pa (N/m2) = N/mm2 = 10-3 m H20 = 1 mm H20 = atm = psi (lb/in2)= in H2O = mm mercury1 psi (lb/i n2) = 144 psf (lbf/ft2) = 6, Pa (N/m2) = N/mm2 = bar = in H2O at 62oF = mm H2O at 62oF = inmercury at 62oF = mm mercury at 62oF = kg/m2 = atm = Ft. H2O = 16 oun ces1 psf (lbf/ft2) = N/m2 (Pa) = lbf/i n2 (psi)1 dyn/cm2 = lbf/i n21 in mercury (Hg) = 3, N/m2= lb/in2 = in water1 Ounce =1 = psi = Lbs./.1 in water = N/m2= lb/i n2 = kg/m2 = in mercury1 m H2O = Pa = N/mm2 = bar = 1,000 kp/m2 = atm = psi (lbf/i n2)1 mm water = Pa (N/m2) = 1 kg/m2 = mm mercury = atm1 mm mercury = lb/i n2 = 133 N/m2 = mm water[url=]Rotati on [/url]revoluti ons,1 r/min (rpm) = r/s = rad/s1 r/s = 60 r/min = rad/s1 rad/s = r/min (rpm) = r/s (rps)[url=]Specific en ergy[/url], en thalpy, en tropy1 Btu/lbm = 2, J/kg = kcal/kg = ft lbf / lbm = 10-4 hp hr / lbm = lbf/i n2 / lbm/ft3 =kp m / g = 10-4 kcal/g = kJ/kg1 J/kg = Btu/lbm = kcal/kg1 kcal/kg = Btu/lbm = 4,187 J/kg[url=]Specific heat capacity[/url]1 J/(kg K) = kcal/(kg oC) = Btu/(lbm oF)1 kJ/(kg K) = kcal/(kg oC) = Btu/(lbm oF)1 Btu/(lbm oF) = 4, J/ (kg K) = 1 kcal/(kg oC)1 kcal/(kg oC) = 4, J/ (kg K) = 1 Btu/(lbm oF)[url=]Specific Volume[/url]1 m3/kg = ft3/lbm = 27680 in 3/lbm = US gal/lbm =1000 liter/kg1 liter/kg = ft3/lbm = in 3/lbm = US gal/lbm = m3/kg1 ft3/lbm = :1728 in 3/lbm : = US gal/lbm =liter/kg = =m3/kg1 in 3/lbm : =ft3/lbm = US gal/lbm = liter/kg = m3/kg1 US gal/lbm = ft3/lbm : =231 in 3/lbm = liter/kg = m3/kg [url=]Temperature[/url]celsius, rankine, kelv in, cen tigrade, fahre nheit.1 oC = oF1 oF = oC0 oC correspo nds to 32 oF, K and RT(oR) = (9/5)T(K)T(oF) = [T(oC)](9/5) + 32T(oF) = [T(K) - ](9/5) + 32T(oC) = 5/9[T(oF) - 32][url=]Thermal con ductivity[/url]1 W/(m K) = kcal/(h m oC) = Btu/(ft h oF)1 Btu/(ft h oF) = W/(m K) = kcal/(h m oC)1 kcal/(h m oC) = W/(m K) = Btu/(ft h oF)[url=]Thermal diffusivity[/url]1 ft2 /s = m2/s1 ft2 /h = m2/s[url=]Thermal resista nce[/url]1 (h oF)/Btu = K/W[url=]Time[/url]year, mon th, day, hour, minu te, sec ond, millisec ond1 h = 3,600 s = 60 min1 ms (milliseco nd) = 10-3 s 1 s (microsecond) = 1-6 s 1 ns(nanosecond) = 10-9 s[url=]Torque, Mome nt[/url]foot-po und torque, n ewt on-meter1 ft lb = Nm[url=]Velocity[/url], speedfoot/sec ond, in ch/sec ond, meter/sec ond, kilometer/hour, knot, mile/hour, nautical mile per hourkn ot (nautical mile per hour)= m/s = kilometers per hour = miles per hour= 1n autical miles per hour 1 League = Miles[url=]Viscosity dyn amic[/url]1 lb/(ft s) = Pa s = P = 1,488 cP = kp s/m21 cP (Ce ntipoise) = 10-3 Pa s = P =kp s/m2 = lb/(ft s)= (N s)/m21 kg/(m s ) = 1 (N s)/m2 = lbm/(ft s) = 10 Poise1 P (Poise) = Pa s = 100 cP = kp s/m2 = lb/(ft s) = kg/ms 1 Pa s (N s/m2) = 10 P (Poise) = 103 cP = kp s/m2 = lb/(ft s)1 kp s/m2 = Pa s = P = 9,807 cP = lb/(ft s)1 rey ns = 1 1bf s/in2 = Pa sDynamic, Absolute and Kinematic Viscosity - An introduction to dynamic, absolute and kin ematic viscosity and how to con vert betwee n Cen tiStokes (cSt), Cen tiPoises (cP), Saybolt Uni versal Seconds (SSU) and degree En gler.[url=]Viscosity kin ematic[/url]1 ft2/s = m2/s 1 ft2/ h = sm/s = km/h =mphm/s = km/h = 88 ft/min = =5280 ft/hr = Ft./sec.= knotskm/h =ft/min : = mphm/s = ft/min:= mph ==knotm/sft/min = mph = m/s = km/h =ft/s =1 St (Stokes) = 1x10-4 m2/s = 100 cSt = ft2/s1 m2/s = 104 St = 106 cSt = ft2/s= 38750 ft2/h1 cSt (Ce ntistokes) = 10-6 m2/s = St = ft2/s[url=]Volume[/url]barrel, gall on, cubic cen timeter (cm3), cubic feet (foot3), cubic inch (in ch3),cubic meter (meter3), cubic yard (yard3), quarts, liters, acre foot, board foot, bushel, cord, cup,dram, fluid oun ce, peck, pint, quart, tablespo on, teaspo on,1 ft3 = m3= dm3 = yd3 = Imp. gal (UK)= gal (US)= :1,728 .1 in3 = m3 = dm3 (liter)= cm3 = 16390 mm3 = ft31 Gallo n (U.S.) =m3 = dm3 (liter)= ft3 = yd3 = Imp. gal (UK) = 4 Quarts = 8Pi nts1 Imp. gal (UK) =m3 = dm3 =ft3 = =yd3 = :gal (US)1 dm3 (Liter)= 10-3 m3 =ft3 : =yd3 =Imp gal (UK)= Gallo ns (US) = Quarts :Pi nts1 yd3 = m3 = dm3 = 27 ft3 = Imp. gal (UK) =gal (US) =46,656 . = 1616 Pints :Quarts = Liters1 pin t (pt) = dm3 (liter) = 16 fl. oz. (fluid ounce) = in31 km3 = 109 m3 = 1012 dm3 (liter) = 1015 cm3 = 1018 mm31 cm3 = in31 m3 = 103 dm3 (liter) = ft3 = yd3 = Imp. gal (UK) = gal (US) = 61,023 .=1 Hogshead = 63 Gallo n =1 Barrel liquid = Gallo ns liquid1 Barrel beer = Gall ons beer1 Barrel oil (petroleum) = 42 Gallo ns oil1 Bushel = . = 32 Quarts (Dry) = 64 Pi nts (dry) = 4 Pecks1 quart (qt) =2 pi nts = in3 = 1/8 dry quarts1 fluid ounce (fl. oz.) =2 tablespo ons = in3 = milliliters1 cord = 128 ft31 peck = 8 dry quarts1 cup = 8 . (fluid ounce)one board foot = piece of lumber 1 foot wide x 1 foot long x 1 inch thick[url=]Volume flow[/url]1 dm3/s (kg/s water) = Imp. gal (UK)/min1 m3/s = 3,600 m3/h = 1,000 dm3(liter)/s = ft3/s = 2, ft3/min = 13,200 (UK)/min =15,852 gal (US)/min1 m3/h = m3/s = dm3(litre)/s = ft3/s = ft3/mi n (cfm) = (UK)/min = gal(US)/min1 m3/h = 103 dm3(litre)/h = dm3(litre)/min = dm3(litre)/s1 ft3/min = m3/h = l/s = :Mi n.1 dm3(litre)/s = 10-3 m3/s = m3/h = ft3/s = ft3/mi n (cfm) = (UK)/min = gal(US)/min = 792 Imp. gal (UK)/h1 dm3(litre)/s = 60 litre/min = =3,600 litre/h1 ft3/s = m3/s = m3/h = dm3(litre)/s = 60 ft3/min =(UK)/min = gal (US)/min1 (UK)/min = m3/s = m3/h = dm3(litre)/s = (US)/min1 gal (US)/min = m3/s = m3/h = dm3(litre)/s = ft3/s = (UK)/min ft3/s = ft3/min = 1,201 galft3/min = Imperial gal。

长度的单位和换算

长度的单位和换算

长度的单位和换算长度是物体在某一方向上的扩展量,是物体大小的度量。

在日常生活中,我们经常使用长度单位来度量或描述各种物体的大小或距离。

长度单位有多种多样,每种单位都有其特定的用途和换算关系。

本文将介绍常见的长度单位及其换算关系,帮助读者更好地理解和应用这些单位。

一、国际单位制的长度单位国际单位制是国际社会广泛应用的单位制,其长度单位为米(m)。

米是定义为光在真空中1/299,792,458秒内传播的距离。

米是最基本的长度单位,其他长度单位都可以通过换算与米产生关联。

二、常见的长度单位及换算关系1. 厘米(cm):1厘米等于0.01米,常用来表示小型物体的大小,如书本的宽度、手机屏幕的对角线长度等。

2. 分米(dm):1分米等于0.1米,常用来表示较小的距离,如门板的宽度、操场的边长等。

3. 千米(km):1千米等于1000米,常用来表示较大的距离,如城市之间的距离、地球上两个地点之间的距离等。

4. 毫米(mm):1毫米等于0.001米,是长度单位中的最小单位,常用来表示微小物体的大小,如细菌的大小、电路元件的尺寸等。

5. 微米(μm):1微米等于0.000001米,是长度单位中更小的单位,常用来表示细胞的大小、光的波长等。

6. 纳米(nm):1纳米等于0.000000001米,是长度单位中最小的单位,在纳米技术领域中起关键作用,如纳米材料的尺寸、纳米器件的构造等。

三、常见长度的换算在实际应用中,经常需要进行不同长度单位之间的换算。

下面是一些常见长度单位之间的换算公式:1. 米与千米的换算:1千米 = 1000米,1米 = 0.001千米。

2. 米与厘米的换算:1米 = 100厘米,1厘米 = 0.01米。

3. 米与毫米的换算:1米 = 1000毫米,1毫米 = 0.001米。

4. 厘米与毫米的换算:1厘米 = 10毫米,1毫米 = 0.1厘米。

5. 微米与毫米的换算:1微米 = 0.001毫米,1毫米 = 1000微米。

小学数学常见公式和单位换算

小学数学常见公式和单位换算

单位换算1.长度单位换算1千米=1000米1米=10分米1分米=10厘米1米=100厘米1厘米=10毫米2.面积单位换算1平方千米=100公顷1公顷=10000平方米1平方米=100平方分米1平方分米=100平方厘米1平方厘米=100平方毫米3.体(容)积单位换算1立方米=1000立方分米1立方分米=1000立方厘米1立方分米=1升1立方厘米=1毫升1立方米=1000升4.重量单位换算1吨=1000千克1千克=1000克1千克=1公斤5.人民币单位换算1元=10角1角=10分1元=100分6.时间单位换算1世纪=100年1年=12月大月(31天)有:1\3\5\7\8\10\12月小月(30天)的有:4\6\9\11月平年2月28天,闰年2月29天平年全年365天,闰年全年366天1日=24小时1时=60分1分=60秒1时=3600秒运算定律●加法交换律:两数相加交换加数的位置,和不变.a+b+c=a+c+b●加法结合律:三个数相加,先把前两个数相加,或先把后两个数相加,再同第三个数相加,和不变.(a+b)+c=a+(b+c)●减法结合律:一个数连续减去两个数,可以先把后两个数相加,再相减。

a-b-c=a-(b+c)减去一个数再加上一个数,等于减去这两个数的差。

a-b+c=a+(c-b)●乘法交换律:两数相乘,交换因数的位置,积不变.a×b=b×a●乘法结合律:三个数相乘,先把前两个数相乘,或先把后两个数相乘,再和第三个数相乘,它们的积不变.(a×b)×c=a×(b×c)●乘法分配律:两个数的和同一个数相乘,可以把两个加数分别同这个数相乘,再把两个积相加,结果不变.(a+b)×c=a×c+b×c如:(2+4)×5=2×5+4×5.●除法的性质:在除法里,被除数和除数同时扩大(或缩小)相同的倍数,商不变.a÷b=(a×c)÷(b×c)=(a÷c)÷(b÷c)(b c均不为0)连续除去两个数,等于除去这两个数的积。

小学常用关系式及单位进率

小学常用关系式及单位进率

常用关系式1、行程问题:速度×时间=路程路程÷速度=时间路程÷时间=速度2、价格问题:单价×数量=总价总价÷单价=数量总价÷数量=单价3、工程问题:工作效率×工作时间=工作总量工作总量÷工作效率=工作时间工作总量÷工作时间=工作效率4、四则运算个部分之间关系:加法:加数+加数=和一个加数=和-另一个加数减法:被减数-减数=差减数=被减数-差被减数=差+减数乘法:因数×因数=积一个因数=积÷另一个因数除法:被除数÷除数=商除数=被除数÷商被除数=商×除数小学数学单位换算公式常用单位换算(注:大单位化成小单位乘以进率,小单位换成大单位除以进率)长度单位换算:1千米km=1000米 m 1米m=10分米dm 1米m=100厘米cm 1分米dm=10厘米cm 1厘米cm=10毫米mm面积单位换算:1平方千米km²=100公顷hm² 1公顷hm²=10000平方米m²1平方米m²=100平方分米 dm² 1平方分米dm²=100平方厘米cm²1平方厘米cm²=100平方毫米mm²体(容)积单位换算:1立方米m³=1000立方分米 dm³ 1立方分米dm³=1000立方厘米cm³1立方分米dm³=1升L 1立方厘米cm³=1毫升ml1立方米m³=1000升L 1升L=1000毫升ml质量单位换算:1吨t=1000 千克kg 1千克kg=1000克g。

米英尺单位换算与计算

米英尺单位换算与计算

米英尺单位换算与计算
本文档将介绍米和英尺两种单位之间的换算方法,并提供一些计算示例。

米和英尺单位换算
米和英尺是常见的长度单位。

在进行换算时,可以使用以下换算关系:
1 米 = 3. 英尺
这个换算关系可以用于将米转换为英尺,或将英尺转换为米。

米转换为英尺
要将米转换为英尺,可以使用以下公式:
英尺 = 米 × 3.
下面是一个例子:
例子:
将 5 米转换为英尺。

英尺 = 5 × 3. = 16.4042 英尺
因此,5 米等于约 16.4042 英尺。

英尺转换为米
要将英尺转换为米,可以使用以下公式:米 = 英尺 ÷ 3.
下面是一个例子:
例子:
将 10 英尺转换为米。

米 = 10 ÷ 3. = 3.048 米
因此,10 英尺等于约 3.048 米。

总结
本文档介绍了米和英尺单位的换算方法,并提供了一些计算示例。

要将米转换为英尺,可以使用公式:英尺 = 米 × 3.。

要将英尺转换为米,可以使用公式:米 = 英尺 ÷ 3.。

通过这些换算方法,我们可以在米和英尺之间进行精确的转换和计算。

希望本文档对您有所帮助!。

常见单位转换关系式

常见单位转换关系式

常见单位转换关系式[url=]Acceleration[/url]foot/second2, meter/second2, gal, galileo,inch/second2∙ 1 m/s2 = 3.28084 ft/s2 = 100 cm/s2 = 39.37 inch per second squared (inch/s2)∙ 1 ft/s2 = 0.3048 m/s2 = 30.48 cm/s2∙ 1 g = 9.80665 m/s2 = 32.17405 ft/s2[url=]Area[/url]acre, are, barn, sq.ft., sq.in., foot2, hectare, inch2, mile2, section, meter2, township, yard2, hectares∙ 1 m2 = 1550 in2 = 10.764 ft2 = 1.1968 yd2 = 3.861x10-7 mile2∙ 1 ft2 = 0.0929 m2 = 144 in2 = 0,1111 yd2 = 3.587x10-8 mile2∙ 1 in2 = 6.452 cm2 = 6.452x10-4 m2 = 6.944x10-3 ft2 = 7.716x10-4 yd2 = 2.491x10-10 mile2∙ 1 yd2 = 0.8361 m2 = 1,296 in2 = 9 ft2 = 0.3228x10-6 mile2∙ 1 mile2 = 2.590x106 m2 = 0.4015x1010 in2 = 2.788x107 ft2 =3.098x106 yd2=640 Acres∙ 1 acre = 1/640 mile2 = 0.404686 ha (Hectares) = 4,046.86 m2 =43,560 Sq.Ft. = 4840 Sq.Yds.∙ 1 km2 = 102 ha2 = 106 m2 = 1010 cm2 = 1012 mm2∙ 1 ha (Hectare) = 104 m2 = 108 cm2 = 1010 mm2 = 2.471 Acres∙ 1 cm2 = 10-4 m2 = 0.155 in2∙ 1 mm2 = 1.55x10-3in2∙ 1 township = 9.323957 107 m2∙ 1 section = 2.589 106 m2[url=]Density[/url]kg/cubic meter, gram/centimeter3, lmb/cubic inch,lbm/cubic foot, slug/cubic foot, kilogram/cubic meter, lbm/gallon (US liq)∙Density Water 1,000 kg/m3 = 62.43 Lbs./Cu.Ft = 8.33 Lbs./Gal. =0.1337 Cu.Ft./Gal.∙ 1 lb/ft3 = 16.018 kg/m3 = 0.016 g/cm3 = 0.00926 oz/in3 = 2.57 oz/gal (Imperial) = 2.139 oz/gal (U.S.) = 0.0005787 lb/in3 = 27 lb/yd3 =0.161 lb/gal (Imperial) = 0.134 lb/gal (U.S) = 0.0121 ton/yd3∙ 1 slug/ft3 = 515.379 kg/m3∙ 1 kg/l = 62.43 lb/ft3∙ 1 kg/m3 = 0.001 g/cm3 = 0.0005780 oz/in3 = 0.16036 oz/gal (Imperial) = 0.1335 oz/gal (U.S.) = 0.0624 lb/ft3 = 0.000036127 lb/in3 = 1.6856 lb/yd3 = 0.010022 lb/gal (Imperial) = 0.008345 lb/gal (U.S) =0.0007525 ton/yd3[url=]Energy[/url]British Thermal Unit (Btu), calorie, joule, kilojoule, electron volt, erg, foot lbf, foot poundal, kilocalorie, kilowatt hour, watt hour,∙ 1 J (Joule) = 0,1020 kpm = 2.778x10-7 kWh = 2.389x10-4 kcal =0.7376 ft lbf = 1 (kg m2)/s2 = 1 watt second = 1 Nm = 1 ft lb =9.478x10-4 Btu∙ 1 kpm = 9.80665 J = 2.724x10-6 kWh = 2.342x10-3 kcal = 7.233 ft lbf = 9.295x10-3 Btu∙ 1 kWh = 3.6x106 J = 3.671x105 kpm = 859.9 kcal = 2.656x106 ft lbf =3.412x103 Btu∙ 1 kJ = 1 kNm = 1kWs = 103 J = 0.947813 Btu = 737.6 ft lbf = 0.23884 kcal∙ 1 Btu (British thermal unit) = 1,055.06 J = 107.6 kpm = 2.931x10-4 kWh = 0.252 kcal = 778.16 ft lbf = 1.055x1010 ergs = 252 cal = 0.293 watt hour∙ 1 cal = 4.186 J∙ 1 kcal = 4186,8 J = 426,9 kp m = 1.163x10-3 kWh = 3.088 ft lbf =3.9683 Btu = 1,000 cal∙ 1 ft lbf (foot pound force) = 1.3558 J = 0.1383 kp m = 3.766x10-7 kWh = 3.238x10-4 kcal = 1.285x10-3 Btu∙ 1 hp h (horse power hour) = 2.6846x106 J = 0.7457 kWh∙ 1 erg = 1 (g cm2)/s2 = 10-7 J∙ 1 eV = 1.602x10-19 J∙ 1 Q = 1018 Btu = 1.055x1021 J∙ 1 Quad = 1015 Btu∙ 1 kg m = 7.233 ft lb = 0.00929 Btu = 9.806 Joule[url=]Energy per unit mass[/url]∙ 1 kJ/kg = 1 J/g = 0.4299 Btu/ lbm = 0.23884 kcal/kg[url=]Flow[/url] - see Volume flow[url=]Force[/url]dyne, kilogram force (kgf), kilopound force, kip, lbf (pound force), ounce force (avoirdupois), poundal, newton∙ 1 N (Newton) = 0.1020 kp = 7.233 pdl = 7.233/32.174 lbf = 0.2248 lbf = 1 (kg m)/s2 = 105 dyn = 1/9.80665 kgf∙ 1 lbf (Pound force) = 4.44822 N = 0.4536 kp = 32.17 pdl = 4.448x105 dyn∙ 1 dyn = 1 (g cm)/s2∙ 1 kg has a weight of 1 kp∙ 1 kp (Kilopond) = 9.80665 N = 2.205 lbf = 70.93 pdl∙ 1 pdl (Poundal) = 0.13826 N = 0.01409 kp = 0.03108 lbf[url=]Heat flow rate[/url]∙ 1 Btu/sec = 1,055.1 W∙ 1 kW (kJ/s) = 102.0 kpm/s = 859.9 kcal/h = 3,413 Btu/h = 1.360 hk =1.341 hp = 738 ft lb/s = 1,000 J/s = 3.6x106 J/h∙ 1 kpm/s = 9.8067x10-3 kW = 8.432 kcal/h = 32.47 Btu/h = 0.01333 hk = 0.01316 hp = 7.237 ft lb/s∙ 1 kcal/h = 1.163x10-3 kW = 0.1186 kpm/s = 3.969 Btu/h = 1.582x10-3 hk = 1.560x10-3 hp = 0.8583 ft lb/s∙ 1 Btu/h = 2.931x10-4 kW = 0.0299 kpm/s = 0.252 kcal/h = 3.986x10-4 hk = 3.939x10-4 hp = 0.2163 ft lb/s∙ 1 kcal/h = 1.16x10-3 kW∙ 1 hk (metric horse power) = 0.735499 kW = 75.00 kpm/s = 632.5 kcal/h = 2,510 Btu/h = 0.9863 hp = 542.8 ft lb/s∙ 1 hp = 0.74570 kW = 76.04 kpm/s = 641.2 kcal/h = 2,545 Btu/h =1.014 hk = 550.3 ft lb/s∙ 1 ft lb/s = 1.35501 kW = 0.1382 kpm/s = 1.165 kcal/h = 4.625 Btu/h =1.843x10-3 hk = 1.817x10-3 hp[url=]Heat flux[/url]∙ 1 Btu/ft2 = 2.713 kcal/m2 = 2.043x104 J/m2K∙ 1 Btu/ ft2 h = 3.1525 W/m2∙ 1 Btu/ft2 oF = 4.88 kcal/m2K = 2.043x104 J/m2K∙ 1 kcal/m2 = 0.369 Btu/ft2∙ 1 kcal/m2K = 0.205 Btu/ft2oF[url=]Heat generation per unit volume[/url]∙ 1 Btu/ft3 = 8.9 kcal/m3 = 3.73x104 J/m3∙ 1 Btu/ft3 h = 10.343 W/m3∙ 1 kcal/m3 = 0.112 Btu/ft3[url=]Heat generation per unit mass[/url]∙ 1 Btu/lb = 0.556 kcal/kg = 2,326 J/kg∙ 1 kcal/kg = 1.800 Btu/lb[url=]Heat transfer coefficient[/url]∙ 1 Btu/ft2 h oF = 5.678 W/m2 K = 4.882 kcal/h m2 oC∙ 1 W/m2K = 0.85984 kcal/h m2 oC = 0.1761 Btu/ ft2 h oF∙ 1 kcal/h m2 oC = 1.163 W/m2K = 0.205 Btu/ ft2 h oF[url=]Hydraulic Gradients[/url]∙ 1 ftH2O/100 ft = 0.44 psi/100 ft = 9.8 kPa/100 m = 1000 mmH2O/100 m∙ 1 psi/100 ft = 2.3 ftH2O/100 ft = 2288 mmH2O/100 ft = 22.46 kPa/100 m[url=]Length[/url]feet, meters, centimeters, kilometers, miles, furlongs, yards, micrometers, inches,angstrom, cubit, fathom, foot, hand, league, light year, micron, mil, nautical mile, rod,∙ 1 m (meter) = 3.2808 ft = 39.37 in = 1.0936 yd = 6.214x10-4 mile ∙ 1 km = 0.6214 mile = 3281 ft = 1094 yds∙ 1 in (inch) = 25.4 mm = 2.54 cm = 0.0254 m = 0.08333 ft = 0.02778 yd = 1.578x10-5 mile∙ 1 ft (foot) = 0.3048 m = 12 in = 0.3333 yd = 1.894x10-4 mile = 30.48 cm = 304.8 mm∙ 1 mm = 10-3 m∙ 1 cm = 10-2 m = 0.3937 in = 0.0328 ft∙ 1 mm = 0.03937 in∙ 1 Ã… (Ã…ngström) = 10-10 m∙ 1 mile = 1.6093 km = 1,609.3 m = 63,346 in = 5,280 ft = 1,760 yd ∙ 1 mil (Norway and Sweden) = 10 kilometres∙ 1 nm (nautical mile) = 1,852 metres = 1.151 mile = 6076.1 feet∙ 1 yd (yard) = 0.9144 m = 36 in = 3 ft = 5.682x10-4 mile∙ 1 Furlong = 660 feet = 40 rods = 1/8 mile∙ 1 rod = 5.5 yards∙ 1 land league = 3 miles∙ 1 Fathom = 6 feet = 1.828804 meters[url=]Mass[/url], weightpounds, kilograms, grams, ounces, grains, tons (long), tons (short), tons (metric), carat, grain, ounce mass, pound mass (lbm), slug, tonne∙ 1 kg = 1,000 g = 2.2046 lb = 6.8521x10-2 slug∙ 1 lb = 16 oz = 0.4536 kg = 453.6 g = 7000 grains = 0.03108 slug∙ 1 slug = 14.594 kg = 32.174 lbm∙ 1 grain = 0.000143 lb = 0.0648 g∙ 1 g = 15.43 grains = 0.0353 oz = 0.002205 lb∙ 1 tonne = 103 kg = 106 g = 109 mg = 0.984 tons∙ 1 qt = 0.9464 liters∙ 1 Ton = 2000 Lbs. = 907 kg∙ 1 long ton = 2240 pounds∙ 1 oz (ounce) = 28.35 g = 437.5 grains∙ 1 troy pound = 12 troy ounces∙ 1 scruple = 20 grains∙ 1 dram = 3 scruples∙ 1 apothecary ounce = 8 drams∙ 1 apothecary pound = 12 apothecary ounces∙ 1 pennyweight = 24 grains∙ 1 Gal. H2O = 8.33 Lbs. H2O∙Density, Specific Weight and Specific Gravity - An introduction and definition of density, specific weight and specific gravity. Formulas with examples.[url=]Mass flow rate[/url]∙ 1 lb/h = 1.26x10-4 kg/s∙ 1 lb/s = 0.4536 kg/s∙ 1 lb/min = 7.56x10-3 kg/s = 27.216 kg/s∙ 1 kg/s = 3,600 kg/h = 132.28 lb/min∙ 1 kg/h = 2.778x10-4 kg/s = 3.67x10-2 lb/minMoment of Inertia∙ 1 kg m2 = 10000 kg cm2 = 54675 ounce in2 = 3417.2 lb in2 = 23.73 lb ft2[url=]Power[/url]horsepower, kilowatt, watt,btu/second, calorie/second, foot lbf/second, kilocalorie/second∙ 1 W = 1 kg m2/s3 = 1 Nm/s = 1 J/s∙ 1 kW = 1,000 Watts = 3,412 Btu/h = 737.6/550 British hp = 1.341 British hp = 103/9.80665 kgf m/s = 737.6 ft lbf/s = 103/(9.80665 75) metric hp∙ 1 hp (English horse power) = 745.7 W = 0.746 kW = 550 ft lb/s = 2,545 Btu/h = 33.000 ft lb/m = 1.0139 metric horse power ~= 1.0 KVA ∙ 1 metric horse power = 736 W = 75 kg m/s = 0.986 English horse power ∙ 1 refrigeration Ton = 12,000 Btu/h cooling = 3.516 kW = 3,025.9 k Calories/h∙ 1 cooling tower Ton = 15,000 Btu/h = 3,782 k Calories/h∙ 1 Therm = 100,000 Btu/h∙ 1 ft lb/s = 1.3558 W∙ 1 Btu/s = 1055.1 W∙ 1 Btu/h = 1 Btuh = 0.293 W = 0.001 MBH[url=]Power per unit area[/url]∙ 1 W/m2 = 0.3170 Btu/(h ft2) = 0.85984 kcal/(h m2)[url=]Pressure[/url]atmosphere, centimeters of mercury, foot of water, bar, barye, centimeter of water, dyne/centimeter2, inch of mercury, inch of water, kgf/centimeter2, kgf/meter2, lbf/foot2, lbf/inch2 (psi), millibar, millimeter of mercury, pascal, torr, newton/meter2∙Standard Atmospheric Pressure 1 atm = 101.325 kN/m2 = 101.325 kPa = 14.7 psia = 0 psig = 29.92 in Hg = 760 torr = 33.95 Ft.H2O = 407.2 In.W.G (Water Gauge) = 2116.8 Lbs./Sq.Ft.∙ 1 N/m2 = 1 Pa = 1.4504x10-4 lb/in2 = 1x10-5 bar = 4.03x10-3 in water = 0.336x10-3 ft water = 0.1024 mm water = 0.295x10-3 in mercury =7.55x10-3 mm mercury = 0.1024 kg/m2 = 0.993x10-5 atm∙ 1 Pa = 10-6 N/mm2 = 10-5 bar = 0.1020 kp/m2 = 1.02x10-4 m H2O =9.869x10-6 atm = 1.45x10-4 psi (lbf/in2)∙ 1 N/mm2 = 106 Pa = 10 bar = 1.020x105 kp/m2 = 102.0 m H2O =9.869 atm = 145.0 psi (lbf/in2)∙ 1 mmHg = 1 torr = 0.01934 lb/in2∙ 1 atm = 101,325 Pa (N/m2) = 1.013x102 kN/m2 = 1.033x104 kp/m2 =1.033 kp/cm2 = 1.013 bar = 14.696 psi (lb/in2) = 407.1 in H2O at 62 0F(16.7 oC) = 33.9 ft H2O at 62 0F (16.7 oC) = 10.33 m H2O at 62 0F (16.7oC) = 29.92 in mercury at 62 0F (16.7 oC) = 760 mm mercury at 62 0F(16.7 oC) = 760 torr∙ 1 bar = 105 Pa (N/m2) = 0.1 N/mm2 = 10,197 kp/m2 = 10.20 m H2O =0.9869 atm = 14.50 psi (lbf/in2) = 106 dyn/cm2 = 750 mmHg∙ 1 kp/m2 = 9.81 Pa (N/m2) = 9.807x10-6 N/mm2 = 10-3 m H2O = 1 mm H2O = 0.9681x10-4 atm = 1.422x10-3 psi (lb/in2) = 0.0394 in H2O =0.0736 mm mercury∙ 1 psi (lb/in2) = 144 psf (lbf/ft2) = 6,894.8 Pa (N/m2) = 6.895x10-3 N/mm2 = 6.895x10-2 bar = 27.71 in H2O at 62oF (16.7oC) = 703.1 mm H2O at 62oF (16.7oC) = 2.0416 in mercury at 62oF (16.7oC) = 51.8 mm mercury at 62oF (16.7oC) = 703.6 kg/m2 = 0.06895 atm = 2.307 Ft.H2O = 16 ounces∙ 1 psf (lbf/ft2) = 47.88 N/m2 (Pa) = 0.006944 lbf/in2 (psi)∙ 1 dyn/cm2 = 145.04x10-7 lbf/in2∙ 1 in mercury (Hg) = 3,376.8 N/m2= 0.49 lb/in2 = 12.8 in water∙ 1 Ounce = 1.73 In.W.C.∙ 1 Ft.H2O = 0.4335 psi = 62.43 Lbs./Sq.Ft.∙ 1 in water = 248.8 N/m2= 0.0361 lb/in2 = 25.4 kg/m2 = 0.0739 in mercury∙ 1 m H2O = 9806.7 Pa = 9.807x10-3 N/mm2 = 0.0987 bar = 1,000 kp/m2 = 0.09678 atm = 1.422 psi (lbf/in2)∙ 1 mm water = 9.81 Pa (N/m2) = 1 kg/m2 = 0.0736 mm mercury =0.9677x10-4 atm∙ 1 mm mercury = 0.0193 lb/in2 = 133 N/m2 = 12.8 mm water[url=]Rotation[/url]revolutions,∙ 1 r/min (rpm) = 0.01667 r/s = 0.105 rad/s∙ 1 r/s = 60 r/min = 6.28 rad/s∙ 1 rad/s = 9.55 r/min (rpm) = 0.159 r/s (rps)[url=]Specific energy[/url], enthalpy, entropy∙ 1 Btu/lbm = 2,326.1 J/kg = 0.55556 kcal/kg = 778.2 ft lbf / lbm = 3.9 10-4 hp hr / lbm = 5.4 lbf/in2 / lbm/ft3 = 0.237 kp m / g = 5.56 10-4 kcal/g = 2.326 kJ/kg∙ 1 J/kg = 4.299x10-4 Btu/lbm = 2.388x10-4 kcal/kg∙ 1 kcal/kg = 1.80 Btu/lbm = 4,187 J/kg[url=]Specific heat capacity[/url]∙ 1 J/(kg K) = 2.389x10-4 kcal/(kg oC) = 2.389x10-4 Btu/(lbm oF)∙ 1 kJ/(kg K) = 0.2389 kcal/(kg oC) = 0.2389 Btu/(lbm oF)∙ 1 Btu/(lbm oF) = 4,186.8 J/ (kg K) = 1 kcal/(kg oC)∙ 1 kcal/(kg oC) = 4,186.8 J/ (kg K) = 1 Btu/(lbm oF)[url=]Specific Volume[/url]∙ 1 m3/kg = 16.02 ft3/lbm = 27680 in3/lbm = 119.8 US gal/lbm = 1000 liter/kg∙ 1 liter/kg = 0.016 ft3/lbm = 27.7 in3/lbm = 0.12 US gal/lbm = 0.001 m3/kg∙ 1 ft3/lbm = 1728 in3/lbm = 7.48 US gal/lbm = 62.43 liter/kg = 0.062 m3/kg∙ 1 in3/lbm = 0.00058 ft3/lbm = 0.0043 US gal/lbm = 0.036 liter/kg =0.000036 m3/kg∙ 1 US gal/lbm = 0.134 ft3/lbm = 231 in3/lbm = 8.35 liter/kg = 0.0083 m3/kg[url=]Temperature[/url]celsius, rankine, kelvin, centigrade, fahrenheit,∙ 1 oC = 1.8 oF∙ 1 oF = 0.555 oC∙0 oC corresponds to 32 oF, 273.16 K and 491.69 R∙T(oR) = (9/5)T(K)∙T(oF) = [T(oC)](9/5) + 32∙T(oF) = [T(K) - 273.15](9/5) + 32∙T(oC) = 5/9[T(oF) - 32][url=]Thermal conductivity[/url]∙ 1 W/(m K) = 0.85984 kcal/(h m oC) = 0.5779 Btu/(ft h oF) ∙ 1 Btu/(ft h oF) = 1.731 W/(m K) = 1.488 kcal/(h m oC)∙ 1 kcal/(h m oC) = 1.163 W/(m K) = 0.6720 Btu/(ft h oF) [url=]Thermal diffusivity[/url]∙ 1 ft2 /s = 0.0929 m2/s∙ 1 ft2 /h = 2.581x10-5 m2/s[url=]Thermal resistance[/url]∙ 1 (h oF)/Btu = 1.8958 K/W[url=]Time[/url]year, month, day, hour, minute, second, millisecond∙ 1 h = 3,600 s = 60 min∙ 1 ms (millisecond) = 10-3 s∙ 1 μs (microsecond) = 10-6 s∙ 1 ns (nanosecond) = 10-9 s[url=]Torque, Moment[/url]foot-pound torque, newton-meter ∙ 1 ft lb = 1.356 Nm[url=]Velocity[/url], speedfoot/second, inch/second, meter/second, kilometer/hour, knot, mile/hour,nautical mile per hour∙ 1 ft/s = 0.3048 m/s∙ 1 ft/min = 5.08x10-3 m/s = 0.0183 km/h = 0.0114 mph∙ 1 mph = 0.44703 m/s = 1.609 km/h = 88 ft/min = 5280 ft/hr = 1.467 Ft./sec. = 0.8684 knots∙ 1 m/s = 3.6 km/h = 196.85 ft/min = 2.237 mph∙ 1 km/h = 0.2778 m/s = 54.68 ft/min = 0.6214 mph = 0.5396 knot ∙ 1 knot (nautical mile per hour)= 0.514444444 m/s = 1.852 kilometers per hour = 1.1515 miles per hour= 1 nautical miles per hour ∙ 1 League = 3.0 Miles[url=]Viscosity dynamic[/url]∙ 1 lb/(ft s) = 1.4879 Pa s = 14.88 P = 1,488 cP = 0.1517 kp s/m2∙ 1 cP (Centipoise) = 10-3 Pa s = 0.01 P = 1.020x10-4 kp s/m2 =6.721x10-4 lb/(ft s) = 0.00100 (N s)/m2∙ 1 kg/(m s ) = 1 (N s)/m2 = 0.6720 lbm/(ft s) = 10 Poise∙ 1 P (Poise) = 0.1 Pa s = 100 cP = 1.020x10-2 kp s/m2 = 6.721x10-2 lb/(ft s) = 0.1 kg/ms∙ 1 Pa s (N s/m2) = 10 P (Poise) = 103 cP = 0.1020 kp s/m2 = 0.6721 lb/(ft s)∙ 1 kp s/m2 = 9.80665 Pa s = 98.07 P = 9,807 cP = 6.591 lb/(ft s)∙ 1 reyns = 1 1bf s/in2 = 6894.76 Pa s∙Dynamic, Absolute and Kinematic Viscosity - An introduction to dynamic, absolute and kinematic viscosity and how to convert betweenCentiStokes (cSt), CentiPoises (cP), Saybolt Universal Seconds (SSU)and degree Engler.[url=]Viscosity kinematic[/url]∙ 1 ft2/s = 0.0929 m2/s∙ 1 ft2/ h = 2.581x10-5m2/s∙ 1 St (Stokes) = 1x10-4 m2/s = 100 cSt = 1.076x10-3 ft2/s∙ 1 m2/s = 104 St = 106 cSt = 10.764 ft2/s= 38750 ft2/h∙ 1 cSt (Centistokes) = 10-6 m2/s = 0.01 St = 1.076x10-5 ft2/s[url=]Volume[/url]barrel, gallon, cubic centimeter (cm3), cubic feet (foot3), cubic inch (inch3), cubic meter (meter3), cubic yard (yard3), quarts, liters, acre foot, board foot, bushel, cord, cup, dram, fluid ounce, peck, pint, quart, tablespoon, teaspoon,∙ 1 ft3 = 0.02832 m3= 28.32 dm3 = 0.03704 yd3 = 6.229 Imp. gal (UK) = 7.481 gal (US) = 1,728 Cu.In.∙ 1 in3 = 1.6387x10-5 m3 = 1.639x10-2 dm3 (liter) = 16.39 cm3 = 16390 mm3 = 0.000579 ft3∙ 1 Gallon (U.S.) = 3.785x10-3 m3 = 3.785 dm3 (liter) = 0.13368 ft3 =4.951x10-3 yd3 = 0.8327 Imp. gal (UK) = 4 Quarts = 8 Pints∙ 1 Imp. gal (UK) = 4.546x10-3 m3 = 4.546 dm3 = 0.1605 ft3 =5.946x10-3 yd3 = 1.201 gal (US)∙ 1 dm3 (Liter) = 10-3 m3 = 0.03532 ft3 = 1.308x10-3 yd3 = 0.220 Imp gal (UK) = 0.2642 Gallons (US) = 1.057 Quarts = 2.113 Pints ∙ 1 yd3 = 0.7646 m3 = 764.6 dm3 = 27 ft3 = 168.2 Imp. gal (UK) = 202.0 gal (US) = 46,656 Cu.In. = 1616 Pints = 807.9 Quarts = 764.6 Liters ∙ 1 pint (pt) = 0.568 dm3 (liter) = 16 fl. oz. (fluid ounce) = 28.88 in3 ∙ 1 km3 = 109 m3 = 1012 dm3 (liter) = 1015 cm3 = 1018 mm3∙ 1 cm3 = 0.061 in3∙ 1 m3 = 103 dm3 (liter) = 35.31 ft3 = 1.3093 yd3 = 220.0 Imp. gal (UK) = 264.2 gal (US) = 61,023 Cu.In. = 0.02832 Cu.Ft∙ 1 Hogshead = 63 Gallon = 8.42184 Cu.Ft∙ 1 Barrel liquid = 31.0 Gallons liquid∙ 1 Barrel beer = 31.5 Gallons beer∙ 1 Barrel oil (petroleum) = 42 Gallons oil∙ 1 Bushel = 1.2445 Cu.Ft. = 32 Quarts (Dry) = 64 Pints (dry) = 4 Pecks ∙ 1 quart (qt) = 2 pints = 57.75 in3 = 1/8 dry quarts∙ 1 fluid ounce (fl. oz.) = 2 tablespoons = 1.805 in3 = 29.574 milliliters ∙ 1 cord = 128 ft3∙ 1 peck = 8 dry quarts∙ 1 cup = 8 fl.oz. (fluid ounce)∙one board foot = piece of lumber 1 foot wide x 1 foot long x 1 inch thick [url=]Volume flow[/url]∙ 1 dm3/s (kg/s water) = 13.20 Imp. gal (UK)/min∙ 1 m3/s = 3,600 m3/h = 1,000 dm3(liter)/s = 35.32 ft3/s = 2,118.9 ft3/min = 13,200 Imp.gal (UK)/min = 15,852 gal (US)/min ∙ 1 m3/h = 2.7778x10-4 m3/s = 0.2778 dm3(litre)/s = 9.810x10-3 ft3/s = 0.5886 ft3/min (cfm) = 3.667 Imp.gal (UK)/min = 4.403 gal (US)/min ∙ 1 m3/h = 103 dm3(litre)/h = 16.67 dm3(litre)/min = 0.27878 dm3(litre)/s∙ 1 ft3/min = 1.7 m3/h = 0.47 l/s = 62.43 Lbs.H2O/Min.∙ 1 dm3(litre)/s = 10-3 m3/s = 3.6 m3/h = 0.03532 ft3/s = 2.1189 ft3/min (cfm) = 13.200 Imp.gal (UK)/min = 15.852 gal (US)/min = 792 Imp. gal (UK)/h∙ 1 dm3(litre)/s = 60 litre/min = 3,600 litre/h∙ 1 ft3/s = 0.0283168 m3/s = 101.9 m3/h = 28.32 dm3(litre)/s = 60 ft3/min = 373.7 Imp.gal (UK)/min = 448.9 gal (US)/min ∙ 1 Imp.gal (UK)/min = 7.57682x10-5 m3/s = 0.0273 m3/h = 0.0758 dm3(litre)/s = 2.675x10-3 ft3/s = 0.1605 ft3/min = 1,201 gal (US)/min ∙ 1 gal (US)/min =6.30888x10-5 m3/s = 0.227 m3/h = 0.06309 dm3(litre)/s = 2.228x10-3 ft3/s = 0.1337 ft3/min = 0.8327 Imperial gal (UK)/min。

单位与时间的换算

单位与时间的换算

单位与时间的换算时间是人们日常生活中常用到的一个概念,它以不同的单位来衡量和计算。

在单位与时间的换算中,我们将介绍常见的时间单位,并提供一些实用的换算公式。

通过本文的阐述,读者将能够更好地理解和应用单位与时间的换算。

1. 秒、分钟、小时、天的转换在时间的常见单位中,秒、分钟、小时和天是最常用的。

它们之间的换算关系如下:1分钟 = 60秒1小时 = 60分钟1天 = 24小时例如,如果我们想要将2小时转换为分钟,我们可以使用以下公式:2小时 = 2 * 60分钟 = 120分钟同样地,如果我们希望将3天转换为小时,我们可以使用以下公式:3天 = 3 * 24小时 = 72小时这种转换关系非常实用,可以在日常生活中轻松计算不同时间单位之间的换算。

2. 周、月、年的转换除了秒、分钟、小时和天,周、月和年也是常见的时间单位。

它们之间的换算关系如下:1周 = 7天1月 = 约30.44天1年 = 365天 (平年)例如,如果我们想要将4周转换为天数,我们可以使用以下公式:4周 = 4 * 7天 = 28天同样地,如果我们希望将6个月转换为天数,我们可以使用以下公式:6个月 = 6 * 30.44天≈ 182.64天当然,要注意月份的天数是变化的,不同月份的天数不尽相同,所以使用约30.44天来近似计算。

3. 大单位与小单位的换算有时候,我们需要将较大的时间单位转换为较小的时间单位,或者将较小的时间单位转换为较大的时间单位。

这时候,我们可以通过逐级换算来实现。

例如,如果我们要将10天转换为小时,可以使用以下公式:10天 = 10 * 24小时 = 240小时同样地,如果我们想要将180分钟转换为小时,可以使用以下公式:180分钟 = 180 ÷ 60小时 = 3小时在实际应用中,不同的单位换算可能会遇到一些小数或近似值的情况,我们可以根据精确度的要求选择合适的处理方法。

总结:单位与时间的换算是我们日常生活中经常应用的技巧之一,通过正确地理解和应用时间单位之间的换算关系,我们可以更方便地进行时间计算和时间转换。

常用关系式和单位换算

常用关系式和单位换算

常用的数量关系式1、每份数×份数=总数总数÷每份数=份数总数÷份数=每份数2、1倍数×倍数=几倍数几倍数÷1倍数=倍数几倍数÷倍数=1倍数3、速度×时间=路程路程÷速度=时间路程÷时间=速度4、单价×数量=总价总价÷单价=数量总价÷数量=单价5、工作效率×工作时间=工作总量工作总量÷工作效率=工作时间工作总量÷工作时间=工作效率6、加数+加数=和和-一个加数=另一个加数7、被减数-减数=差被减数-差=减数差+减数=被减数8、因数×因数=积积÷一个因数=另一个因数9、被除数÷除数=商被除数÷商=除数商×除数=被除数小学数学图形计算公式1、正方形(C:周长S:面积a:边长)周长=边长×4 C=4a 面积=边长×边长S=a×a2、正方体(V:体积a:棱长)表面积=棱长×棱长×6 S表=a×a×6 体积=棱长×棱长×棱长V=a×a×a3、长方形(C:周长S:面积a:边长)周长=(长+宽)×2 C=2(a+b) 面积=长×宽S=ab4、长方体(V:体积s:面积a:长b: 宽h:高)(1)表面积(长×宽+长×高+宽×高)×2 S=2(ab+ah+bh) (2)体积=长×宽×高V=abh 5、三角形(s:面积a:底h:高)面积=底×高÷2 s=ah÷2 三角形高=面积×2÷底三角形底=面积×2÷高6、平行四边形(s:面积a:底h:高)面积=底×高s=ah7、梯形(s:面积a:上底b:下底h:高)面积=(上底+下底)×高÷2 s=(a+b)×h÷28、圆形(S:面积C:周长лd=直径r=半径)(1)周长=直径×л=2×л×半径C=лd=2лr (2)面积=半径×半径×л9、圆柱体(v:体积h:高s:底面积r:底面半径c:底面周长)(1)侧面积=底面周长×高=ch(2лr或лd) (2)表面积=侧面积+底面积×2(3)体积=底面积×高(4)体积=侧面积÷2×半径10、圆锥体(v:体积h:高s:底面积r:底面半径)体积=底面积×高÷311、总数÷总份数=平均数12、和差问题的公式:(和+差)÷2=大数(和-差)÷2=小数13、和倍问题:和÷(倍数-1)=小数小数×倍数=大数(或者和-小数=大数)14、差倍问题:差÷(倍数-1)=小数小数×倍数=大数(或小数+差=大数)15、相遇问题相遇路程=速度和×相遇时间;相遇时间=相遇路程÷速度和;速度和=相遇路程÷相遇时间16、浓度问题溶质的重量+溶剂的重量=溶液的重量溶质的重量÷溶液的重量×100%=浓度溶液的重量×浓度=溶质的重量溶质的重量÷浓度=溶液的重量17、利润与折扣问题利润=售出价-成本;利润率=利润÷成本×100%=(售出价÷成本-1)×100%涨跌金额=本金×涨跌百分比;利息=本金×利率×时间;税后利息=本金×利率×时间×(1-20%)常用单位换算长度单位换算1千米=1000米1米=10分米1分米=10厘米1米=100厘米1厘米=10毫米面积单位换算:1平方千米=100公顷1公顷=10000平方米1平方米=100平方分米1平方分米=100平方厘米1平方厘米=100平方毫米体(容)积单位换算:1立方米=1000立方分米1立方分米=1000立方厘米1立方分米=1升1立方厘米=1毫升1立方米=1000升重量单位换算:1吨=1000 千克1千克=1000克1千克=1公斤人民币单位换算:1元=10角1角=10分1元=100分时间单位换算:1世纪=100年1年=12月大月(31天)有:1\3\5\7\8\10\12月小月(30天)的有:4\6\9\11月平年2月28天, 闰年2月29天平年全年365天, 闰年全年366天1日=24小时1时=60分1分=60秒1时=3600秒基本概念第一章数和数的运算一概念(一)整数1 整数的意义:自然数和0都是整数。

单位换算关系式总结

单位换算关系式总结

单位换算关系式总结:一、长度单位:Km m dm cm mm千米(公里)米分米厘米毫米进制是10的进制是100的进制是1000的1米=10分米 1米=100厘米 1千米=1000米1分米=10厘米 1分米=100毫米 1米=1000毫米1厘米=10毫米二、重量单位:T kg g吨千克(公斤)克1吨=1000千克 1公斤=2斤1千克=1000克 1斤=500克三、面积单位:K㎡ h㎡㎡ d㎡ c㎡平方千米公顷平方米平方分米平方厘米进制是100的进制是10000的进制是1000000的1平方千米=100公顷 1公顷=10000平方米 1平方千米=1000000平方米1平方米=100平方分米 1平方米=10000平方厘米1平方分米=100厘米四、常用公式:长方形的周长=(长+宽)×2长方形的长=周长÷2-宽长方形的宽=周长÷2-长长方形的面积=长×宽长方形的宽=面积÷长长方形的长=面积÷宽正方形的周长=边长×4正方形的边长=周长÷4正方形的面积=边长×边长两个相同的小正方形拼成的大长方形的周长=边长×6面积=边长×边长×2(这里的边长是原来小正方形的边长)两个相同的小长方形(且宽是长的一半)拼成的大正方形的周长=长×4面积=长×长大长方形的周长=(长×2+宽)×2面积=长×2×宽(这里的长和宽都是原来小长方形的长和宽)同学们,请大家熟记基本换算关系:重量单位:1吨=1000千克 1千克=1000克长度单位:1千米=1000米 1米=1000毫米1米=10分米 1分米=10厘米 1厘米=10毫米1米=100厘米面积单位:1平方千米=100公顷1公顷=10000平方米 1平方米=100平方分米1平方分米=100平方厘米 1平方厘米=100平方毫米1平方米=10000平方厘米时间单位:1世纪=100年 1年=12月 1月=28或29或30或31日1日=24时 1小时=60分 1分=60秒货币单位: 1元=10角1角=10分。

计算机单位换算公式大全

计算机单位换算公式大全

计算机单位换算公式大全单位换算是计算机科学和工程中非常重要的一个概念。

在计算机中,不同的数据类型和存储介质之间存在着不同的单位换算关系。

下面是一些常见的计算机单位换算公式:1. 位(bit)和字节(byte)的换算关系:一个字节等于8个位。

所以换算公式为:1 byte = 8 bits。

2.字节和千字节(KB)的换算关系:一个千字节等于1024个字节。

所以换算公式为:1 KB = 1024 bytes。

3.千字节和兆字节(MB)的换算关系:一个兆字节等于1024个千字节。

所以换算公式为:1MB=1024KB。

4.兆字节和千兆字节(GB)的换算关系:一个千兆字节等于1024个兆字节。

所以换算公式为:1GB=1024MB。

5.千兆字节和太字节(TB)的换算关系:一个太字节等于1024个千兆字节。

所以换算公式为:1TB=1024GB。

6.太字节和拍字节(PB)的换算关系:一个拍字节等于1024个太字节。

所以换算公式为:1PB=1024TB。

7. 毫秒(ms)和秒(s)的换算关系:一秒等于1000毫秒。

所以换算公式为:1 s = 1000 ms。

8. 秒和分钟(min)的换算关系:一分钟等于60秒。

所以换算公式为:1 min = 60 s。

9.分钟和小时(h)的换算关系:一小时等于60分钟。

所以换算公式为:1 h = 60 min。

10. 小时和天(day)的换算关系:一天等于24小时。

所以换算公式为:1 day = 24 h。

11. 天和周(week)的换算关系:一周等于7天。

所以换算公式为:1 week = 7 days。

12. 周和月(month)的换算关系:一个月平均等于4周。

所以换算公式为:1 month = 4 weeks。

13. 月和年(year)的换算关系:一年等于12个月。

所以换算公式为:1 year = 12 months。

14.存储容量单位的换算关系:存储容量的单位换算关系主要是根据1024进行换算,即:1 KB = 1024 bytes,1 MB = 1024 KB,1 GB = 1024 MB,以此类推。

测量单位换算

测量单位换算

测量单位换算在日常生活和学习中,我们经常需要进行测量单位的换算。

不同的测量单位之间存在着特定的换算关系,正确地进行换算能够帮助我们更准确地理解和使用各种测量单位。

本文将介绍一些常见的测量单位换算方法和实际应用示例。

一、长度单位换算1.1 米与千米的换算米(m)是国际通用的长度单位,而千米(km)则表示长度更长的距离。

它们之间的换算关系是:1千米 = 1000米,1米 = 0.001千米。

以此为基础,我们可以进行米与千米的简便换算。

例如,如果我们需要将一条长为7.5千米的跑道长度表达为米,则可以使用以下换算公式:7.5千米 × 1000米/1千米 = 7500米同样地,如果我们有一根长为3000米的绳子,我们可以将其换算为千米的形式:3000米 × 1千米/1000米 = 3千米通过以上的换算方法,我们可以方便地在米和千米之间进行单位转换。

1.2 厘米与米的换算厘米(cm)是长度单位中较小的一种,而米(m)较为常用。

它们之间的换算关系是:1米 = 100厘米,1厘米 = 0.01米。

举个例子,如果一根绳子的长度是45米,我们需要将其转换为厘米:45米 × 100厘米/1米 = 4500厘米同样地,如果我们知道一条绳子的长度为550厘米,我们也可以将其转换为米的形式:550厘米 × 1米/100厘米 = 5.5米通过以上的换算方法,我们可以在厘米和米之间进行方便的单位转换。

二、重量单位换算2.1 千克与克的换算千克(kg)和克(g)是常见的重量单位。

它们之间的换算关系是:1千克 = 1000克,1克 = 0.001千克。

例如,如果我们需要将一个重量为 2.5千克的包裹转换为克的形式,可以使用以下转换公式:2.5千克 × 1000克/1千克 = 2500克同样地,如果我们有一个重量为3500克的物品,我们也可以将其转换为千克:3500克 × 1千克/1000克 = 3.5千克通过以上的换算方法,我们可以在千克和克之间进行方便的单位转换。

常用公式大全单位换算表

常用公式大全单位换算表

常用公式大全单位换算表常用的公式和单位换算可以非常广泛,涵盖了数学、物理、化学、工程学等多个领域。

以下是常见的公式和单位换算的一些例子:数学公式:1. 一次方程:ax + b = 0,其中a和b为常数,求解得到x = -b/a。

2. 二次方程:ax^2 + bx + c = 0,其中a、b和c为常数,根据求根公式得到x = (-b ± √(b^2 - 4ac)) / (2a)。

3. 三角函数:例如正弦函数sin(x)、余弦函数cos(x)、正切函数tan(x)等。

物理公式:1.力的公式:F=m*a,其中F表示力,m表示质量,a表示加速度。

2.速度的公式:v=d/t,其中v表示速度,d表示位移,t表示时间。

3. 功的公式:W = F * d * cos(θ),其中W表示功,F表示力,d表示位移,θ表示两者之间的夹角。

化学公式:1.摩尔质量计算:M=m/n,其中M表示摩尔质量,m表示质量,n表示摩尔数。

2.摩尔浓度计算:C=n/V,其中C表示摩尔浓度,n表示摩尔数,V表示体积。

3.化学反应平衡定律:aA+bB↔cC+dD,反应的平衡常数表达式为Kc=([C]^c*[D]^d)/([A]^a*[B]^b),其中[]表示浓度。

工程学公式:1.电流、电压和电阻的关系:U=I*R,其中U表示电压,I表示电流,R表示电阻。

2.功率公式:P=U*I,其中P表示功率,U表示电压,I表示电流。

3.体积流量公式:Q=A*v,其中Q表示体积流量,A表示截面积,v表示流速。

单位换算表:1. 长度单位换算:1米(m) = 100厘米(cm) = 1000毫米(mm) =0.001千米(km)。

3. 时间单位换算:1秒(s) = 1000毫秒(ms) = 60秒(min) = 60分钟(h) = 24小时(day) = 7天(week) = 30天(month) = 365天(year)。

4.温度单位换算:摄氏度(℃)和华氏度(℉)的转换公式为℉=℃*9/5+32,℃=(℉-32)*5/95. 压力单位换算:1帕斯卡(Pa) = 1000毫巴(mbar) = 0.001兆帕(MPa)。

单位换算的基本原理

单位换算的基本原理

单位换算的基本原理单位换算是在不同度量衡之间进行转换的过程,通过换算可以方便地进行数值的比较、计算和理解。

在科学、工程、贸易等领域,单位换算起着重要的作用。

本文将介绍单位换算的基本原理及其应用。

一、度量衡体系度量衡体系是用于测量各种物理量的一套标准单位组成的系统。

国际上常用的度量衡体系是国际单位制(SI)。

SI基本单位包括米(m)、千克(kg)、秒(s)、安培(A)、摩尔(mol)、净(cd)和开尔文(K),这些单位相互独立、相互关联。

二、基本单位之间的换算在单位换算中,常用到基本单位之间的转换。

以下是一些常见的基本单位之间的换算关系:1. 长度单位换算:1米(m)= 100厘米(cm)= 1000毫米(mm)1千米(km)= 1000米(m)1英尺(ft)= 0.3048米(m)1英里(mi)= 1.609344千米(km)2. 质量单位换算:1千克(kg)= 1000克(g)1吨(t)= 1000千克(kg)1磅(lb)= 0.4536千克(kg)1盎司(oz)= 28.3495克(g)3. 时间单位换算:1小时(h)= 60分钟(min)1分钟(min)= 60秒(s)1天(d)= 24小时(h)1周(wk)= 7天(d)4. 温度单位换算:摄氏度(°C)和开尔文(K)之间的转换关系为:K = °C + 273.15三、应用示例下面将通过一些具体的应用示例来展示单位换算的实际应用。

1. 速度单位换算:假设一个自行车以10英里/小时的速度匀速行驶,若要将速度换算为米/秒,可以使用以下方法进行换算:首先,将英里转换为千米,1英里 = 1.609344千米然后,将千米转换为米,1千米 = 1000米最后,将小时转换为秒,1小时 = 3600秒因此,将10英里/小时换算为米/秒,可以计算得到:10英里/小时 = (10 * 1.609344 * 1000)米 / (1 * 3600)秒 = 4.4704米/秒2. 温度单位换算:假设气温是摄氏30度,需要将其转换为华氏度。

克的换算单位和公式表

克的换算单位和公式表

克的换算单位和公式表1. 千克(kg):千克是国际制计量中的基本质量单位,1千克等于1000克。

3. 克拉(ct):克拉是用来计量宝石质量的单位,1克拉等于200毫克,即1克拉等于0.2克。

4. 盎司(oz):盎司是常用的质量单位之一,尤其在欧美地区广泛使用,1盎司等于约28.35克。

接下来是一些常见物质的换算单位和计算公式。

1.白糖:白糖的常见质量单位是克和千克。

换算关系为1千克等于1000克。

2.水:水的质量单位也是克和千克。

换算关系为1千克等于1000克。

3.钢铁:钢铁的质量单位多为吨和千克。

换算关系为1公吨等于1000千克,1千克等于1000克。

4.金属:金属的质量单位多为吨和千克。

换算关系为1公吨等于1000千克,1千克等于1000克。

5.药物:药物的质量单位常为毫克和克。

换算关系为1克等于1000毫克。

6.粉末:粉末的质量单位常为克和千克。

换算关系为1千克等于1000克。

需要注意的是,质量单位之间的换算是基于10的数量级,因此换算时需要对数量级进行适当调整。

在实际应用中,经常需要进行质量单位之间的换算。

以下是一些典型的换算公式:1.克转千克:质量(千克)=质量(克)/1000例如:5000克=5000/1000=5千克2.千克转克:质量(克)=质量(千克)x1000例如:2.5千克=2.5x1000=2500克通过这些换算公式,可以方便地在不同质量单位之间进行换算。

总结一下,克是常见的质量单位,与千克、公吨等单位之间存在换算关系。

在实际应用中,根据不同物质,选择合适的质量单位,并使用相应的换算公式进行换算,可以方便地进行质量单位之间的转换。

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常见单位转换关系式[url=]Acceleration[/url]foot/second2, meter/second2, gal, galileo, inch/second2• 1 m/s2 = 3.28084 ft/s2 = 100 cm/s2 = 39.37 inch per second squared (inch/s2) • 1 ft/s2 = 0.3048 m/s2 = 30.48 cm/s2• 1 g = 9.80665 m/s2 = 32.17405 ft/s2[url=]Area[/url]acre, are, barn, sq.ft., sq.in., foot2, hectare, inch2, mile2, section, meter2, township, yard2, hectares• 1 m2 = 1550 in2 = 10.764 ft2 = 1.1968 yd2 = 3.861x10-7 mile2• 1 ft2 = 0.0929 m2 = 144 in2 = 0,1111 yd2 = 3.587x10-8 mile2• 1 in2 = 6.452 cm2 = 6.452x10-4 m2 = 6.944x10-3 ft2 = 7.716x10-4 yd2 =2.491x10-10 mile2• 1 yd2 = 0.8361 m2 = 1,296 in2 = 9 ft2 = 0.3228x10-6 mile2• 1 mile2 = 2.590x106 m2 = 0.4015x1010 in2 = 2.788x107 ft2 = 3.098x106 yd2=640 Acres• 1 acre = 1/640 mile2 = 0.404686 ha (Hectares) = 4,046.86 m2 =43,560 Sq.Ft.= 4840 Sq.Yds.• 1 km2 = 102 ha2 = 106 m2 = 1010 cm2 = 1012 mm2• 1 ha (Hectare) = 104 m2 = 108 cm2 = 1010 mm2 = 2.471 Acres• 1 cm2 = 10-4 m2 = 0.155 in2• 1 mm2 = 1.55x10-3in2• 1 township = 9.323957 107 m2• 1 section = 2.589 106 m2[url=]Density[/url]kg/cubic meter, gram/centimeter3, lmb/cubic inch, lbm/cubic foot, slug/cubic foot, kilogram/cubic meter, lbm/gallon (US liq)•Density Water 1,000 kg/m3 = 62.43 Lbs./Cu.Ft = 8.33 Lbs./Gal. = 0.1337 Cu.Ft./Gal.• 1 lb/ft3 = 16.018 kg/m3 = 0.016 g/cm3 = 0.00926 oz/in3 = 2.57 oz/gal (Imperial) = 2.139 oz/gal (U.S.) = 0.0005787 lb/in3 = 27 lb/yd3 = 0.161 lb/gal (Imperial) = 0.134 lb/gal (U.S) = 0.0121 ton/yd3• 1 slug/ft3 = 515.379 kg/m3• 1 kg/l = 62.43 lb/ft3• 1 kg/m3 = 0.001 g/cm3 = 0.0005780 oz/in3 = 0.16036 oz/gal (Imperial) = 0.1335 oz/gal (U.S.) = 0.0624 lb/ft3 = 0.000036127 lb/in3 = 1.6856 lb/yd3 = 0.010022 lb/gal (Imperial) = 0.008345 lb/gal (U.S) = 0.0007525 ton/yd3[url=]Energy[/url]British Thermal Unit (Btu), calorie, joule, kilojoule, electron volt, erg, foot lbf, foot poundal, kilocalorie, kilowatt hour, watt hour,• 1 J (Joule) = 0,1020 kpm = 2.778x10-7 kWh = 2.389x10-4 kcal = 0.7376 ft lbf = 1 (kg m2)/s2 = 1 watt second = 1 Nm = 1 ft lb = 9.478x10-4 Btu • 1 kpm = 9.80665 J = 2.724x10-6 kWh = 2.342x10-3 kcal = 7.233 ft lbf = 9.295x10-3 Btu• 1 kWh = 3.6x106 J = 3.671x105 kpm = 859.9 kcal = 2.656x106 ft lbf = 3.412x103 Btu• 1 kJ = 1 kNm = 1kWs = 103 J = 0.947813 Btu = 737.6 ft lbf = 0.23884 kcal • 1 Btu (British thermal unit) = 1,055.06 J = 107.6 kpm = 2.931x10-4 kWh = 0.252 kcal = 778.16 ft lbf = 1.055x1010 ergs = 252 cal = 0.293 watt hour • 1 cal = 4.186 J• 1 kcal = 4186,8 J = 426,9 kp m = 1.163x10-3 kWh = 3.088 ft lbf = 3.9683 Btu = 1,000 cal• 1 ft lbf (foot pound force) = 1.3558 J = 0.1383 kp m = 3.766x10-7 kWh =3.238x10-4 kcal = 1.285x10-3 Btu• 1 hp h (horse power hour) = 2.6846x106 J = 0.7457 kWh• 1 erg = 1 (g cm2)/s2 = 10-7 J• 1 eV = 1.602x10-19 J• 1 Q = 1018 Btu = 1.055x1021 J• 1 Quad = 1015 Btu• 1 kg m = 7.233 ft lb = 0.00929 Btu = 9.806 Joule[url=]Energy per unit mass[/url]• 1 kJ/kg = 1 J/g = 0.4299 Btu/ lbm = 0.23884 kcal/kg[url=]Flow[/url] - see Volume flow[url=]Force[/url]dyne, kilogram force (kgf), kilopound force, kip, lbf (pound force), ounce force (avoirdupois), poundal, newton• 1 N (Newton) = 0.1020 kp = 7.233 pdl = 7.233/32.174 lbf = 0.2248 lbf = 1 (kg m)/s2 = 105 dyn = 1/9.80665 kgf• 1 lbf (Pound force) = 4.44822 N = 0.4536 kp = 32.17 pdl = 4.448x105 dyn • 1 dyn = 1 (g cm)/s2• 1 kg has a weight of 1 kp• 1 kp (Kilopond) = 9.80665 N = 2.205 lbf = 70.93 pdl• 1 pdl (Poundal) = 0.13826 N = 0.01409 kp = 0.03108 lbf[url=]Heat flow rate[/url]• 1 Btu/sec = 1,055.1 W• 1 kW (kJ/s) = 102.0 kpm/s = 859.9 kcal/h = 3,413 Btu/h = 1.360 hk = 1.341 hp = 738 ft lb/s = 1,000 J/s = 3.6x106 J/h• 1 kpm/s = 9.8067x10-3 kW = 8.432 kcal/h = 32.47 Btu/h = 0.01333 hk = 0.01316 hp = 7.237 ft lb/s• 1 kcal/h = 1.163x10-3 kW = 0.1186 kpm/s = 3.969 Btu/h = 1.582x10-3 hk =1.560x10-3 hp = 0.8583 ft lb/s• 1 Btu/h = 2.931x10-4 kW = 0.0299 kpm/s = 0.252 kcal/h = 3.986x10-4 hk =3.939x10-4 hp = 0.2163 ft lb/s• 1 kcal/h = 1.16x10-3 kW• 1 hk (metric horse power) = 0.735499 kW = 75.00 kpm/s = 632.5 kcal/h = 2,510 Btu/h = 0.9863 hp = 542.8 ft lb/s• 1 hp = 0.74570 kW = 76.04 kpm/s = 641.2 kcal/h = 2,545 Btu/h = 1.014 hk = 550.3 ft lb/s• 1 ft lb/s = 1.35501 kW = 0.1382 kpm/s = 1.165 kcal/h = 4.625 Btu/h = 1.843x10-3 hk = 1.817x10-3 hp[url=]Heat flux[/url]• 1 Btu/ft2 = 2.713 kcal/m2 = 2.043x104 J/m2K• 1 Btu/ ft2 h = 3.1525 W/m2• 1 Btu/ft2 oF = 4.88 kcal/m2K = 2.043x104 J/m2K• 1 kcal/m2 = 0.369 Btu/ft2• 1 kcal/m2K = 0.205 Btu/ft2oF[url=]Heat generation per unit volume[/url]• 1 Btu/ft3 = 8.9 kcal/m3 = 3.73x104 J/m3• 1 Btu/ft3 h = 10.343 W/m3• 1 kcal/m3 = 0.112 Btu/ft3[url=]Heat generation per unit mass[/url]• 1 Btu/lb = 0.556 kcal/kg = 2,326 J/kg• 1 kcal/kg = 1.800 Btu/lb[url=]Heat transfer coefficient[/url]• 1 Btu/ft2 h oF = 5.678 W/m2 K = 4.882 kcal/h m2 oC• 1 W/m2K = 0.85984 kcal/h m2 oC = 0.1761 Btu/ ft2 h oF• 1 kcal/h m2 oC = 1.163 W/m2K = 0.205 Btu/ ft2 h oF[url=]Hydraulic Gradients[/url]• 1 ftH2O/100 ft = 0.44 psi/100 ft = 9.8 kPa/100 m = 1000 mmH2O/100 m• 1 psi/100 ft = 2.3 ftH2O/100 ft = 2288 mmH2O/100 ft = 22.46 kPa/100 m[url=]Length[/url]feet, meters, centimeters, kilometers, miles, furlongs, yards, micrometers, inches,angstrom, cubit, fathom, foot, hand, league, light year, micron, mil, nautical mile, rod,• 1 m (meter) = 3.2808 ft = 39.37 in = 1.0936 yd = 6.214x10-4 mile• 1 km = 0.6214 mile = 3281 ft = 1094 yds• 1 in (inch) = 25.4 mm = 2.54 cm = 0.0254 m = 0.08333 ft = 0.02778 yd = 1.578x10-5 mile• 1 ft (foot) = 0.3048 m = 12 in = 0.3333 yd = 1.894x10-4 mile = 30.48 cm = 304.8 mm• 1 mm = 10-3 m• 1 cm = 10-2 m = 0.3937 in = 0.0328 ft• 1 mm = 0.03937 in• 1 Ã… (Ã…ngström) = 10-10 m• 1 mile = 1.6093 km = 1,609.3 m = 63,346 in = 5,280 ft = 1,760 yd• 1 mil (Norway and Sweden) = 10 kilometres• 1 nm (nautical mile) = 1,852 metres = 1.151 mile = 6076.1 feet• 1 yd (yard) = 0.9144 m = 36 in = 3 ft = 5.682x10-4 mile• 1 Furlong = 660 feet = 40 rods = 1/8 mile• 1 rod = 5.5 yards• 1 land league = 3 miles• 1 Fathom = 6 feet = 1.828804 meters[url=]Mass[/url], weightpounds, kilograms, grams, ounces, grains, tons (long), tons (short), tons (metric), carat, grain, ounce mass, pound mass (lbm), slug, tonne• 1 kg = 1,000 g = 2.2046 lb = 6.8521x10-2 slug• 1 lb = 16 oz = 0.4536 kg = 453.6 g = 7000 grains = 0.03108 slug• 1 slug = 14.594 kg = 32.174 lbm• 1 grain = 0.000143 lb = 0.0648 g• 1 g = 15.43 grains = 0.0353 oz = 0.002205 lb• 1 tonne = 103 kg = 106 g = 109 mg = 0.984 tons• 1 qt = 0.9464 liters• 1 Ton = 2000 Lbs. = 907 kg• 1 long ton = 2240 pounds• 1 oz (ounce) = 28.35 g = 437.5 grains• 1 troy pound = 12 troy ounces• 1 scruple = 20 grains• 1 dram = 3 scruples• 1 apothecary ounce = 8 drams• 1 apothecary pound = 12 apothecary ounces• 1 pennyweight = 24 grains• 1 Gal. H2O = 8.33 Lbs. H2O•Density, Specific Weight and Specific Gravity - An introduction and definition of density, specific weight and specific gravity. Formulas with examples.[url=]Mass flow rate[/url]• 1 lb/h = 1.26x10-4 kg/s• 1 lb/s = 0.4536 kg/s• 1 lb/min = 7.56x10-3 kg/s = 27.216 kg/s• 1 kg/s = 3,600 kg/h = 132.28 lb/min• 1 kg/h = 2.778x10-4 kg/s = 3.67x10-2 lb/minMoment of Inertia• 1 kg m2 = 10000 kg cm2 = 54675 ounce in2 = 3417.2 lb in2 = 23.73 lb ft2[url=]Power[/url]horsepower, kilowatt, watt,btu/second, calorie/second, footlbf/second, kilocalorie/second• 1 W = 1 kg m2/s3 = 1 Nm/s = 1 J/s• 1 kW = 1,000 Watts = 3,412 Btu/h = 737.6/550 British hp = 1.341 British hp = 103/9.80665 kgf m/s = 737.6 ft lbf/s = 103/(9.80665 75) metric hp • 1 hp (English horse power) = 745.7 W = 0.746 kW = 550 ft lb/s = 2,545 Btu/h = 33.000 ft lb/m = 1.0139 metric horse power ~= 1.0 KVA• 1 metric horse power = 736 W = 75 kg m/s = 0.986 English horse power • 1 refrigeration Ton = 12,000 Btu/h cooling = 3.516 kW = 3,025.9 k Calories/h • 1 cooling tower Ton = 15,000 Btu/h = 3,782 k Calories/h• 1 Therm = 100,000 Btu/h• 1 ft lb/s = 1.3558 W• 1 Btu/s = 1055.1 W• 1 Btu/h = 1 Btuh = 0.293 W = 0.001 MBH[url=]Power per unit area[/url]• 1 W/m2 = 0.3170 Btu/(h ft2) = 0.85984 kcal/(h m2)[url=]Pressure[/url]atmosphere, centimeters of mercury, foot of water, bar, barye, centimeter of water, dyne/centimeter2, inch of mercury, inch of water,kgf/centimeter2, kgf/meter2, lbf/foot2, lbf/inch2 (psi), millibar, millimeter of mercury, pascal, torr, newton/meter2•Standard Atmospheric Pressure1 atm = 101.325 kN/m2 = 101.325 kPa = 14.7 psia = 0 psig = 29.92 in Hg = 760 torr = 33.95 Ft.H2O = 407.2 In.W.G (Water Gauge) = 2116.8 Lbs./Sq.Ft.• 1 N/m2 = 1 Pa = 1.4504x10-4 lb/in2 = 1x10-5 bar = 4.03x10-3 in water =0.336x10-3 ft water = 0.1024 mm water = 0.295x10-3 in mercury = 7.55x10-3mm mercury = 0.1024 kg/m2 = 0.993x10-5 atm• 1 Pa = 10-6 N/mm2 = 10-5 bar = 0.1020 kp/m2 = 1.02x10-4 m H2O = 9.869x10-6 atm = 1.45x10-4 psi (lbf/in2)• 1 N/mm2 = 106 Pa = 10 bar = 1.020x105 kp/m2 = 102.0 m H2O = 9.869 atm = 145.0 psi (lbf/in2)• 1 mmHg = 1 torr = 0.01934 lb/in2• 1 atm = 101,325 Pa (N/m2) = 1.013x102 kN/m2 = 1.033x104 kp/m2 = 1.033 kp/cm2 = 1.013 bar = 14.696 psi (lb/in2) = 407.1 in H2O at 62 0F (16.7 oC) = 33.9 ft H2O at 62 0F (16.7 oC) = 10.33 m H2O at 62 0F (16.7 oC) = 29.92 in mercury at 62 0F (16.7 oC) = 760 mm mercury at 62 0F (16.7 oC) = 760 torr • 1 bar = 105 Pa (N/m2) = 0.1 N/mm2 = 10,197 kp/m2 = 10.20 m H2O = 0.9869 atm = 14.50 psi (lbf/in2) = 106 dyn/cm2 = 750 mmHg• 1 kp/m2 = 9.81 Pa (N/m2) = 9.807x10-6 N/mm2 = 10-3 m H2O = 1 mm H2O = 0.9681x10-4 atm = 1.422x10-3 psi (lb/in2) = 0.0394 in H2O = 0.0736 mm mercury • 1 psi (lb/in2) = 144 psf (lbf/ft2) = 6,894.8 Pa (N/m2) = 6.895x10-3 N/mm2 = 6.895x10-2 bar = 27.71 in H2O at 62oF (16.7oC) = 703.1 mm H2O at 62oF (16.7oC)= 2.0416 in mercury at 62oF (16.7oC) = 51.8 mm mercury at 62oF (16.7oC) = 703.6 kg/m2 = 0.06895 atm = 2.307 Ft. H2O = 16 ounces• 1 psf (lbf/ft2) = 47.88 N/m2 (Pa) = 0.006944 lbf/in2 (psi)• 1 dyn/cm2 = 145.04x10-7 lbf/in2• 1 in mercury (Hg) = 3,376.8 N/m2= 0.49 lb/in2 = 12.8 in water• 1 Ounce = 1.73 In.W.C.• 1 Ft.H2O = 0.4335 psi = 62.43 Lbs./Sq.Ft.• 1 in water = 248.8 N/m2= 0.0361 lb/in2 = 25.4 kg/m2 = 0.0739 in mercury • 1 m H2O = 9806.7 Pa = 9.807x10-3 N/mm2 = 0.0987 bar = 1,000 kp/m2 = 0.09678 atm = 1.422 psi (lbf/in2)• 1 mm water = 9.81 Pa (N/m2) = 1 kg/m2 = 0.0736 mm mercury = 0.9677x10-4 atm • 1 mm mercury = 0.0193 lb/in2 = 133 N/m2 = 12.8 mm water[url=]Rotation[/url]revolutions,• 1 r/min (rpm) = 0.01667 r/s = 0.105 rad/s• 1 r/s = 60 r/min = 6.28 rad/s• 1 rad/s = 9.55 r/min (rpm) = 0.159 r/s (rps)[url=]Specific energy[/url], enthalpy, entropy• 1 Btu/lbm = 2,326.1 J/kg = 0.55556 kcal/kg = 778.2 ft lbf / lbm = 3.9 10-4 hp hr / lbm = 5.4 lbf/in2 / lbm/ft3 = 0.237 kp m / g = 5.56 10-4 kcal/g =2.326 kJ/kg• 1 J/kg = 4.299x10-4 Btu/lbm = 2.388x10-4 kcal/kg• 1 kcal/kg = 1.80 Btu/lbm = 4,187 J/kg[url=]Specific heat capacity[/url]• 1 J/(kg K) = 2.389x10-4 kcal/(kg oC) = 2.389x10-4 Btu/(lbm oF)• 1 kJ/(kg K) = 0.2389 kcal/(kg oC) = 0.2389 Btu/(lbm oF)• 1 Btu/(lbm oF) = 4,186.8 J/ (kg K) = 1 kcal/(kg oC)• 1 kcal/(kg oC) = 4,186.8 J/ (kg K) = 1 Btu/(lbm oF)[url=]Specific Volume[/url]• 1 m3/kg = 16.02 ft3/lbm = 27680 in3/lbm = 119.8 US gal/lbm = 1000 liter/kg • 1 liter/kg = 0.016 ft3/lbm = 27.7 in3/lbm = 0.12 US gal/lbm = 0.001 m3/kg • 1 ft3/lbm = 1728 in3/lbm = 7.48 US gal/lbm = 62.43 liter/kg = 0.062 m3/kg • 1 in3/lbm = 0.00058 ft3/lbm = 0.0043 US gal/lbm = 0.036 liter/kg = 0.000036 m3/kg• 1 US gal/lbm = 0.134 ft3/lbm = 231 in3/lbm = 8.35 liter/kg = 0.0083 m3/kg [url=]Temperature[/url]celsius, rankine, kelvin, centigrade, fahrenheit,• 1 oC = 1.8 oF• 1 oF = 0.555 oC•0 oC corresponds to 32 oF, 273.16 K and 491.69 R•T(oR) = (9/5)T(K)•T(oF) = [T(oC)](9/5) + 32•T(oF) = [T(K) - 273.15](9/5) + 32•T(oC) = 5/9[T(oF) - 32][url=]Thermal conductivity[/url]• 1 W/(m K) = 0.85984 kcal/(h m oC) = 0.5779 Btu/(ft h oF)• 1 Btu/(ft h oF) = 1.731 W/(m K) = 1.488 kcal/(h m oC)• 1 kcal/(h m oC) = 1.163 W/(m K) = 0.6720 Btu/(ft h oF)[url=]Thermal diffusivity[/url]• 1 ft2 /s = 0.0929 m2/s• 1 ft2 /h = 2.581x10-5 m2/s[url=]Thermal resistance[/url]• 1 (h oF)/Btu = 1.8958 K/W[url=]Time[/url]year, month, day, hour, minute, second, millisecond• 1 h = 3,600 s = 60 min• 1 ms (millisecond) = 10-3 s• 1 μs (microsecond) = 10-6 s• 1 ns (nanosecond) = 10-9 s[url=]Torque, Moment[/url]foot-pound torque, newton-meter• 1 ft lb = 1.356 Nm[url=]Velocity[/url], speedfoot/second, inch/second, meter/second, kilometer/hour, knot, mile/hour,nautical mile per hour• 1 ft/s = 0.3048 m/s• 1 ft/min = 5.08x10-3 m/s = 0.0183 km/h = 0.0114 mph• 1 mph = 0.44703 m/s = 1.609 km/h = 88 ft/min = 5280 ft/hr = 1.467 Ft./sec.= 0.8684 knots• 1 m/s = 3.6 km/h = 196.85 ft/min = 2.237 mph• 1 km/h = 0.2778 m/s = 54.68 ft/min = 0.6214 mph = 0.5396 knot• 1 knot (nautical mile per hour)= 0.514444444 m/s = 1.852 kilometers per hour = 1.1515 miles per hour= 1 nautical miles per hour• 1 League = 3.0 Miles[url=]Viscosity dynamic[/url]• 1 lb/(ft s) = 1.4879 Pa s = 14.88 P = 1,488 cP = 0.1517 kp s/m2• 1 cP (Centipoise) = 10-3 Pa s = 0.01 P = 1.020x10-4 kp s/m2 = 6.721x10-4 lb/(ft s) = 0.00100 (N s)/m2• 1 kg/(m s ) = 1 (N s)/m2 = 0.6720 lbm/(ft s) = 10 Poise• 1 P (Poise) = 0.1 Pa s = 100 cP = 1.020x10-2 kp s/m2 = 6.721x10-2 lb/(ft s) = 0.1 kg/ms• 1 Pa s (N s/m2) = 10 P (Poise) = 103 cP = 0.1020 kp s/m2 = 0.6721 lb/(ft s) • 1 kp s/m2 = 9.80665 Pa s = 98.07 P = 9,807 cP = 6.591 lb/(ft s)• 1 reyns = 1 1bf s/in2 = 6894.76 Pa s•Dynamic, Absolute and Kinematic Viscosity - An introduction to dynamic, absolute and kinematic viscosity and how to convert between CentiStokes (cSt), CentiPoises (cP), Saybolt Universal Seconds (SSU) and degree Engler.[url=]Viscosity kinematic[/url]• 1 ft2/s = 0.0929 m2/s• 1 ft2/ h = 2.581x10-5m2/s• 1 St (Stokes) = 1x10-4 m2/s = 100 cSt = 1.076x10-3 ft2/s• 1 m2/s = 104 St = 106 cSt = 10.764 ft2/s= 38750 ft2/h• 1 cSt (Centistokes) = 10-6 m2/s = 0.01 St = 1.076x10-5 ft2/s[url=]Volume[/url]barrel, gallon, cubic centimeter (cm3), cubic feet (foot3), cubic inch (inch3), cubic meter (meter3), cubic yard (yard3), quarts, liters, acre foot, board foot, bushel, cord, cup, dram, fluid ounce, peck, pint, quart, tablespoon, teaspoon,• 1 ft3 = 0.02832 m3= 28.32 dm3 = 0.03704 yd3 = 6.229 Imp. gal (UK) = 7.481 gal (US) = 1,728 Cu.In.• 1 in3 = 1.6387x10-5 m3 = 1.639x10-2 dm3 (liter) = 16.39 cm3 = 16390 mm3 =0.000579 ft3• 1 Gallon (U.S.) = 3.785x10-3 m3 = 3.785 dm3 (liter) = 0.13368 ft3 = 4.951x10-3 yd3 = 0.8327 Imp. gal (UK) = 4 Quarts = 8 Pints• 1 Imp. gal (UK) = 4.546x10-3 m3 = 4.546 dm3 = 0.1605 ft3 = 5.946x10-3 yd3 = 1.201 gal (US)• 1 dm3 (Liter) = 10-3 m3 = 0.03532 ft3 = 1.308x10-3 yd3 = 0.220 Imp gal (UK) = 0.2642 Gallons (US) = 1.057 Quarts = 2.113 Pints• 1 yd3 = 0.7646 m3 = 764.6 dm3 = 27 ft3 = 168.2 Imp. gal (UK) = 202.0 gal (US) = 46,656 Cu.In. = 1616 Pints = 807.9 Quarts = 764.6 Liters • 1 pint (pt) = 0.568 dm3 (liter) = 16 fl. oz. (fluid ounce) = 28.88 in3 • 1 km3 = 109 m3 = 1012 dm3 (liter) = 1015 cm3 = 1018 mm3• 1 cm3 = 0.061 in3• 1 m3 = 103 dm3 (liter) = 35.31 ft3 = 1.3093 yd3 = 220.0 Imp. gal (UK) = 264.2 gal (US) = 61,023 Cu.In. = 0.02832 Cu.Ft• 1 Hogshead = 63 Gallon = 8.42184 Cu.Ft• 1 Barrel liquid = 31.0 Gallons liquid• 1 Barrel beer = 31.5 Gallons beer• 1 Barrel oil (petroleum) = 42 Gallons oil• 1 Bushel = 1.2445 Cu.Ft. = 32 Quarts (Dry) = 64 Pints (dry) = 4 Pecks • 1 quart (qt) = 2 pints = 57.75 in3 = 1/8 dry quarts• 1 fluid ounce (fl. oz.) = 2 tablespoons = 1.805 in3 = 29.574 milliliters • 1 cord = 128 ft3• 1 peck = 8 dry quarts• 1 cup = 8 fl.oz. (fluid ounce)•one board foot = piece of lumber 1 foot wide x 1 foot long x 1 inch thick [url=]Volume flow[/url]• 1 dm3/s (kg/s water) = 13.20 Imp. gal (UK)/min• 1 m3/s = 3,600 m3/h = 1,000 dm3(liter)/s = 35.32 ft3/s = 2,118.9 ft3/min = 13,200 Imp.gal (UK)/min = 15,852 gal (US)/min• 1 m3/h = 2.7778x10-4 m3/s = 0.2778 dm3(litre)/s = 9.810x10-3 ft3/s = 0.5886 ft3/min (cfm) = 3.667 Imp.gal (UK)/min = 4.403 gal (US)/min • 1 m3/h = 103 dm3(litre)/h = 16.67 dm3(litre)/min = 0.27878 dm3(litre)/s • 1 ft3/min = 1.7 m3/h = 0.47 l/s = 62.43 Lbs.H2O/Min.• 1 dm3(litre)/s = 10-3 m3/s = 3.6 m3/h = 0.03532 ft3/s = 2.1189 ft3/min (cfm) = 13.200 Imp.gal (UK)/min = 15.852 gal (US)/min = 792 Imp. gal (UK)/h • 1 dm3(litre)/s = 60 litre/min = 3,600 litre/h• 1 ft3/s = 0.0283168 m3/s = 101.9 m3/h = 28.32 dm3(litre)/s = 60 ft3/min = 373.7 Imp.gal (UK)/min = 448.9 gal (US)/min• 1 Imp.gal (UK)/min = 7.57682x10-5 m3/s = 0.0273 m3/h = 0.0758 dm3(litre)/s = 2.675x10-3 ft3/s = 0.1605 ft3/min = 1,201 gal (US)/min • 1 gal (US)/min =6.30888x10-5 m3/s = 0.227 m3/h = 0.06309 dm3(litre)/s =2.228x10-3 ft3/s = 0.1337 ft3/min = 0.8327 Imperial gal (UK)/min。

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