SAT2物理常用公式总结pdf版
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天道留学
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n
speed of light in vacuum(or air) speed of light in the substance n2 sin 1 n1 sin 2
heat required for vaporization=mass H V heat gianed(or lost)=mass sp.ht.temp.change +mass melted heat of fusion +mass vaporized heat of vaporization
Vector and Forces
1.1ver
torque=force length of moment arm the sum of the clockwise moments=the sum of the counterclockwise moments
Motion and Forces
distance covered time required displacement average velocity= time distance covered=average speed time S=vavt average speed= acceleration= a v f vi change in velocity time required for change
work force distance gravitational potential energy=wh=mgh 1 kinetic energy= mv 2 2 energy produced=mc 2
force of friction during motion normal work against friction=friction distance object moves 1 elastic potential energy= kx 2 2 work power time force distance power time coefficient of sliding friction=
Static Electricity—Electric Circuits
天道留学
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kq1q2 d2 E F / q (E=electric field intensity,F=the force exerted on positive charge q) work potential difference= charge work V q E V / d (E=electric field intensity,V=the difference of potential between the plates) work V q F L length in meters kL R=resistance in ohms R A A=cross-sectional area in meter 2 k=a constant for the material and is called resistivity; unit is ohm-meter IT VT / RT RT VT / IT VT IT RT
F A (diameter of large piston)2 f a (diameter of small piston)2 For a solid that sinks in water: weight in air sp.gr. apparent loss of weight in water For a liquid: apparent loss in weight of solid in liquid sp.gr. apparent loss in weight of solid in water Heat, Temperature, Thermal Expansion IMA
天道留学
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Under ideal conditions there is no useless work. Then work output=work input FR SE F S IMA(ideal mechanical advantage) E R For a machine work output efficirncy= work input AMA ideal effort efficiency= IMA actual effort
focal length of the objective focal length of the eyepiece intensity of source illmination distance2 telescopic magnification=
Physical Optics: Interference and Diffraction
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SAT II 物理常用公式总结
天道留学
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SAT II PHYSICS
vav average speed v f final velocity a acceleration t elapsed time s distance covered v vf vav i 2
v f vi at 1 S vi t at 2 2 2 2 v f vi 2as Ft change in momentum=mass change in velocity momentum=mass velocity
Geometrical Optics: Reflection and Refraction For a special mirror the focal length is equal to one-half of the radius of the spherical shell f R/2 Law of Refraction sin 1 n (n index of refraction) sin 2
weight of object length of plane IMA ideal effort height of plane
Fluid Mechanics
mass volume For solids and liquids: density density of substance sp.gr. density of water weight of substance sp.gr. weight of equal volume of water mass of substance sp.gr. mass of equal volume of water F A P hdg (h=height, d=density) F hdgA P
actual mechanical advantage(AMA)= AMA= FR FE resistance actual effort
work output=resistance distance resistance moves work output=FR R R work input=effort distance effort moves work input=FE S E
Centripetal Force
ac
v2 r
天道留学
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mv 2 r 2 r v T 4 2 r a 2 T Gravitational Fields Gm1m2 F r2 GM s v r Work, Energy, Simple Machines Fc
v t t Motion with constant acceleration (starting from rest) vav v f / 2 v f at (v f gt )
S vf 2 1 2 1 at ( S gt 2 ) 2 2 2 2as (v f 2 gs )
Heat and Work; Heat Transfer
heat flow=change ininternal energy+work done by sysSound
Periodic Motion For a stretched spring: F kx m T 2 k For waves: 1 T f v f ( =wavelength) the number of beats=the difference between the two frequence Closed Pipes =4l a Vibrating Air Columns Open Pipes =2l a =2ls
Images Formed by Lenses 1 1 1 object distance image distance focal length 1 1 1 p q f size of image image distance magnification( m) size of object object distance
OBJECT DISTANCE Convex Lens(or Concave Mirror) greater than 2f 2f between f and 2f less than f Concave Lens(or Convex Mirror) any distance IMAGE CHARACTERISTICS real, smaller, between f and 2f, inverted real, same size, 2f, inverted real, larger, greater than 2f, inverted virtual. ;larger, q more than p, erect virtual smaller, erect, q less than p
天道留学
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change in length=oringinal length coeff. of expansion temp. change p1V1 p2V2 V=volume, T=absolute temperature, P=pressure p1V1 p2V2 T1 T2 Measurement of Heat heat required for melting=mass H F V1 T1 V2 T2
x d L wavelength d=distance between the two silts L=distance between the barrier and the screen x=distance between the central maximum and the first bright fringe
更多 SAT 考试资料，请访问
n
speed of light in vacuum(or air) speed of light in the substance n2 sin 1 n1 sin 2
heat required for vaporization=mass H V heat gianed(or lost)=mass sp.ht.temp.change +mass melted heat of fusion +mass vaporized heat of vaporization
Vector and Forces
1.1ver
torque=force length of moment arm the sum of the clockwise moments=the sum of the counterclockwise moments
Motion and Forces
distance covered time required displacement average velocity= time distance covered=average speed time S=vavt average speed= acceleration= a v f vi change in velocity time required for change
work force distance gravitational potential energy=wh=mgh 1 kinetic energy= mv 2 2 energy produced=mc 2
force of friction during motion normal work against friction=friction distance object moves 1 elastic potential energy= kx 2 2 work power time force distance power time coefficient of sliding friction=
Static Electricity—Electric Circuits
天道留学
更多 SAT 考试资料，请访问
kq1q2 d2 E F / q (E=electric field intensity,F=the force exerted on positive charge q) work potential difference= charge work V q E V / d (E=electric field intensity,V=the difference of potential between the plates) work V q F L length in meters kL R=resistance in ohms R A A=cross-sectional area in meter 2 k=a constant for the material and is called resistivity; unit is ohm-meter IT VT / RT RT VT / IT VT IT RT
F A (diameter of large piston)2 f a (diameter of small piston)2 For a solid that sinks in water: weight in air sp.gr. apparent loss of weight in water For a liquid: apparent loss in weight of solid in liquid sp.gr. apparent loss in weight of solid in water Heat, Temperature, Thermal Expansion IMA
天道留学
更多 SAT 考试资料，请访问
Under ideal conditions there is no useless work. Then work output=work input FR SE F S IMA(ideal mechanical advantage) E R For a machine work output efficirncy= work input AMA ideal effort efficiency= IMA actual effort
focal length of the objective focal length of the eyepiece intensity of source illmination distance2 telescopic magnification=
Physical Optics: Interference and Diffraction
更多 SAT 考试资料，请访问
SAT II 物理常用公式总结
天道留学
更多 SAT 考试资料，请访问
SAT II PHYSICS
vav average speed v f final velocity a acceleration t elapsed time s distance covered v vf vav i 2
v f vi at 1 S vi t at 2 2 2 2 v f vi 2as Ft change in momentum=mass change in velocity momentum=mass velocity
Geometrical Optics: Reflection and Refraction For a special mirror the focal length is equal to one-half of the radius of the spherical shell f R/2 Law of Refraction sin 1 n (n index of refraction) sin 2
weight of object length of plane IMA ideal effort height of plane
Fluid Mechanics
mass volume For solids and liquids: density density of substance sp.gr. density of water weight of substance sp.gr. weight of equal volume of water mass of substance sp.gr. mass of equal volume of water F A P hdg (h=height, d=density) F hdgA P
actual mechanical advantage(AMA)= AMA= FR FE resistance actual effort
work output=resistance distance resistance moves work output=FR R R work input=effort distance effort moves work input=FE S E
Centripetal Force
ac
v2 r
天道留学
更多 SAT 考试资料，请访问
mv 2 r 2 r v T 4 2 r a 2 T Gravitational Fields Gm1m2 F r2 GM s v r Work, Energy, Simple Machines Fc
v t t Motion with constant acceleration (starting from rest) vav v f / 2 v f at (v f gt )
S vf 2 1 2 1 at ( S gt 2 ) 2 2 2 2as (v f 2 gs )
Heat and Work; Heat Transfer
heat flow=change ininternal energy+work done by sysSound
Periodic Motion For a stretched spring: F kx m T 2 k For waves: 1 T f v f ( =wavelength) the number of beats=the difference between the two frequence Closed Pipes =4l a Vibrating Air Columns Open Pipes =2l a =2ls
Images Formed by Lenses 1 1 1 object distance image distance focal length 1 1 1 p q f size of image image distance magnification( m) size of object object distance
OBJECT DISTANCE Convex Lens(or Concave Mirror) greater than 2f 2f between f and 2f less than f Concave Lens(or Convex Mirror) any distance IMAGE CHARACTERISTICS real, smaller, between f and 2f, inverted real, same size, 2f, inverted real, larger, greater than 2f, inverted virtual. ;larger, q more than p, erect virtual smaller, erect, q less than p
天道留学
更多 SAT 考试资料，请访问
change in length=oringinal length coeff. of expansion temp. change p1V1 p2V2 V=volume, T=absolute temperature, P=pressure p1V1 p2V2 T1 T2 Measurement of Heat heat required for melting=mass H F V1 T1 V2 T2
x d L wavelength d=distance between the two silts L=distance between the barrier and the screen x=distance between the central maximum and the first bright fringe