SAT2考试物理考点分析
SAT2物理考点分析
SAT2物理考点分析在谈论备考之前，当然要明白SAT2物理备考需要涉及哪些考点。
毕竟明白SAT2物理知识点及公式是一个前提，SAT2考点有：力学(运动学、动力学、能量、动量、圆周运动、简谐运动、重力)、电磁学(电场、电势、电容、电路、电磁)、波和光(波的性质、反射和折射、射线)、热力学以及现代物理。
重点是力学和电磁学，但是要拿满分，其它知识点也是不容忽视的。
对于美高的同学们来说，SAT II Physics最理想的考试时间是上完Physics/Physics honors之后。
不过，真考会比上课的内容更广、更深。
如果学校开设AP Physics 1和AP Physics2，那么上完后再考SAT II Physics把握会更大。
另外，虽然很多美高的Physics课本确实都有SAT II Physics考试的所有知识点，但是由于课程内容多，相对比较难，所以老师有些知识点会简单带过，或者忽略不讲(例如我们学校，传统流程是先化学再物理，所以物理老师自动把热力学部分直接跳过了)。
所以，同学们如果有计划在学年结束时考SAT II Physics，可以提前跟物理老师沟通，了解哪些是老师课上会教的，哪些是需要自学的。
对于国内的同学来说，参加SAT II Physic考试有高二基础基本就没有问题，不过仍需对照考纲看有什么知识点是在国内没有学过的。
另外，SAT II Physics中力学和电磁学的比重非常大，部分内容和知识点是国内初二、初三学的，很可能等到高二去考试的时候这些知识点都忘记了，所以同学们可以重点去复习一下这些内容。
SAT II物理中，个人感觉电磁学和热力学部分比力学难。
现代物理这个部分，可能美高和国内高中物理课都不会完全涵盖到，需要同学们自学。
现代物理部分虽然只占了6%-11%，真考75道题里可能只有4、5道，但这却是考试中最容易得分的题目。
所以，这部分内容虽然大家不熟悉，但难度不大，只是记忆和概念性的内容比较多。
SAT2物理800分自学备考攻略
SAT2物理800分自学备考攻略SAT2物理SAT2 Physics是所有SAT科目考试理科中较难的一门。
然而，对于想要申请很多美国大学工程学院的同学们来说，SAT II Physics又是必不可少的一门考试。
那么应该如何准备这门让人又爱又怕的考试呢?考点及复习重点SAT II Physics的考点有：力学(运动学、动力学、能量、动量、圆周运动、简谐运动、重力)、电磁学(电场、电势、电容、电路、电磁)、波和光(波的性质、反射和折射、射线)、热力学以及现代物理。
重点是力学和电磁学，但是要拿满分，其它知识点也是不容忽视的。
对于国内的同学来说，参加SAT II Physic考试有高二基础基本就没有问题，不过仍需对照考纲看有什么知识点是在国内没有学过的。
另外，SAT II Physics中力学和电磁学的比重非常大，部分内容和知识点是国内初二、初三学的，很可能等到高二去考试的时候这些知识点都忘记了，所以同学们可以重点去复习一下这些内容。
SAT II物理中，个人感觉电磁学和热力学部分比力学难。
现代物理这个部分，可能美高和国内高中物理课都不会完全涵盖到，需要同学们自学。
现代物理部分虽然只占了6%-11%，真考75道题里可能只有4、5道，但这却是考试中最容易得分的题目。
所以，这部分内容虽然大家不熟悉，但难度不大，只是记忆和概念性的内容比较多。
对于想要冲满分800的同学来说，这部分是不能轻易失分的。
建议同学们买一本SAT II Physics的巴朗，然后把里面列出的科学家、历史上有名的科学实验背熟就行了。
另外，目前市面上常见的SAT2物理复习教材还有以下两种，没有提到的不是我没见过，是根本不入流。
Princeton优点：知识点覆盖全面、讲解比较清晰缺点：习题数量很少、难度仅为正常考试的80%左右、印刷和答案错误极多Barron优点：讲解较有深度、对物理本质理解透彻缺点：涉及过多超纲知识点、习题难度很高、与真题出题思路严重不符我们在备考时，可以以Princeton教材为主，Barron为辅。
SAT2物理 总结
Wave1. Mechanical waves are periodic disturbances in a medium that transfei energy2.electromagnetic waves donot need a medium for propagation3.waves can be either transverse or longitudinal4.the velocity of a wave is equal to the the product of its frequency and its wavelength5.inference and diffraction are characteristics typical for all waves6.resonance involves matching the natural vibrating vibrating frequency of objects7.nodes are points that do not move in a standing wave8.standing wave node occur every half wavelength .9.diffraction occurs as waves bend around barriers in the same medium10.interference can either be constructive (reinforce) or destructive(cancellation)11.superposition is the mixing of waves , which can either add or subtract amplitudes depending on the phases of the interfering waves.Doppler effectLaws of vibrating stringsVibrating air columns (closed pipes open pipes )The number of beats=the difference between the two frequenciesGeometrical optics:Reflection and RefractionNormal 法线incident light 入射光线diffuse reflection 漫反射regular reflection 镜面反射erect 正立的center of curvature (C) 两倍焦距principal focus (F) f=C/21.light is an electromagnetic wave2.The law of reflection states that the angle of incidence is equal to the angle of reflection.3.All angle are measures relative to the normal line.4.Refraction is a change in the direction of light caused by a change in light’s velocity as it goes from one transparent medium into another at an oblique angle.5.The absolute index of refractionof a transparent material is equal to the ratio of the velocity of light in air to the velocity of light in the material.6.As light goes form a lower-index material to a high-index material, it slows down and bends toward the normal.7.n1*sinθ1=n2*sinθ28.Total reflection occurswhen the angle of the incidence in the optically denser medium is grater than the critical angle(one condition is must n1:n2>1)9.Real image can be projected onto a screen. Vitul images cannot be projected and are percieved by the brain as existing on the other side of a mirror.10.Real images can be formed by concave mirror or convex lenses.11.A prism can disperse white light into the colors of the spctrum since the different frequencies of light refract at different angle in the prime.12. Table(1)13.The color of an opaque object is determined by the color of the light it reflects.14.Types of spectra Table(2)15.Convex lens converg; concave lens diverg.16.1/d o+1/d i=1/f17.Size of the image/size of object=image distance /object disance=magnification(m)18.Image in palne mirror (1) the image is the same size.(2)the image is erect(3)the image is virtual.Physical opticsInterference and diffractionLight and interference diffraction of light by a gratingThin film interference polarization1.Thomas Young demonstrated light interference in 18012.Interference colors can be seen in thin films and soap bubbles3.The polarization of light is evidence for its transverse nature. Longitudinal waves(such as sound)cannot be polarized.4.POLARIZATION 原理Elements of electronics1.capacitors store charge in simple circuits.2.Heated metals can emit electrons.3.In a vacuum tube, a hot filament emits a beam of electrons that can be controlled by electromagnetic field and potential differences.4.Q=CV C (farad)5.Potential energy =6.In series7.In parallel8.Thermionic emission:heated metal the part that is heated so that it will give off electrons is called the cathode.Electricity1.electric charge are positive or negative2.Coulomb’s law is described as an inverse square law for static charges.3.Electric field lines show the direction that a positive test charge would travel.(?)4.The electrical potential difference (voltage)is a measure of the work done per unit charge5.Conventional current indicates the flow of positive charge una circuit.6.Ohm’s law related the voltage in a circuit to the current and electrical resistance.7.Seried circuit have the same current throught,but the potential drops are shared proportionally among the various resistors.8.Parallel circuits have the same potential diffence across each resistor,but the current is divided along the circuits inversely proportional to amount of resistabce in a branch.9.Kirchhoff’s rule says that the sum of the currents entering a branch must equal to the sum of the currents leaving a branch in a parallel circuit.10.Joule’s law Q=11.Power P=VI12.The combined resistors in parallel is always less than the smallest resistance.13.The internal resistance can be treated as anexternal resistance V T=emf-Ir14.Resistance(ohm) R=kL/A metallic is increase when temperature rises15.Conductivity is the reciprocal of resistivityMagnetism10.the field lines around terrestrial magnets flow from north to south as indicated by a magnetic compass11.An electric current can generate a magnetic field12.The direction of electromagnetic field can be determined using right-hand rules13.Interacting electromagnetic fields can produce forces in current-carrying wires or on moving electric charges14.An electric meter (voltmeter or ammeter)can be develped based on the twisting force on a wire caused by interacting electromagnetic field.15.A wire moving in a magnetic field can have a current induced in it.16.The magnetic flux of a current induced in a wire always opposes the magnetic flux of the current that induces it. The Lenz’s law.17.secondary emf/primary emf=number of turns on secondary/number of turns on primary18.VsIs=VsIs*efficiencyQuantum theory and nuclear phsicsPhotoelectric effect nuclear changes atomic modelssubatomic particles and accelerators fission and fusion radioactivity1.photoelectric effect:(1)the light consist of photos (2)cannot be explained by the wave theory of light2.The maximum kinetic enery of emitted electrons is independent of the intensity of the incident light but varies directly with the frequency of the incident light.3.Plank’s constant (h) is a universal constant that governs the quantum models of light and atoms.4. Bohr’s theorythe emission of hydrogen specrea by hypothesizing that electrons can exist in certain energy states. Light can be emitted as electrons go from higher to lower energy states.5.Rutherford showed that the atom consistd mostly of empty space with a small,positively charged nucleus.6.The instability of a nucleus profuces radioactive decay that can transmute one element into another.7.Fission involves the splitting of a uranium nucleus,while fusion involves the combining fo hydrogen unclei to form helium.in both cases,large amount of energy are released,consistent with Einstein’s formula8.Protons and neutrons are made up of even smaller particles called quarks.。
SAT2物理(考试介绍及模拟题)
SAT2物理考试内容与考点介绍Math and physics go hand in hand, right? You might be surprised, then, to learn that you aren’t allowed to use a calculator on SAT II Physics. The math required of you never goes beyond simple arithmetic and manipulation of equations. You have, on average, 48 seconds to answer each question, and the people at ETS realize that isn’t enough time to delve into problems involving simultaneous equations or complex trigonometry. They’re more interested in testing your grasp of the basic concepts of phys ics. If you’ve grasped these concepts, your weakness in math isn’t going to hurt you.ETS breaks down the concepts you need to know for the test into six categories:Topic Percentage of the TestMechanics 34–38%Electricity and Magnetism 22–26%Waves 15–19%Heat, Kinetic Theory, and Thermodynamics 8–12%Modern Physics 8–12%Miscellaneous 2–4%While these categories are helpful, they are also very broad. You may be a whiz with waves but a loser with lenses,and want to know how much of the waves portion of the test will bedevoted to optics. To help you out, we’ve broken the test down evenfurther so that you’ll know exactly where to expect to feel thesqueeze. (These figures are only approximations, and may vary from testto test.)Topic % of the Test Number of QuestionsMechanics 34–38% 25–29Vectors 2% 1–2Kinematics 6% 4–5Dynamics 10% 7–8Work, Energy, and Power 6% 4–5Special Problems in Mechanics 5% 3–4Linear Momentum 2% 1–2Rotational Motion 1% 0–1Circular Motion and Gravitation 4% 2–4Thermal Physics 8–12% 6–10Heat and Temperature 4% 2–4Kinetic Theory and Ideal Gas Laws 2–3% 1–2Laws of Thermodynamics 1% 0–2Heat Engines 2–3% 1–2Electricity & Magnetism 22–26% 16–20Electric Fields, Forces, Potential 10% 7–8Magnetic Fields and Forces 6% 4–5Electromagnetic Induction 1% 1Circuits and Circuit Elements 6% 4–5Waves 15–19% 11–15Waves 10% 7–8Optics 7% 5–6Modern Physics 8–12% 6–9Special Relativity 1–2% 1–2Atomic Models 3% 2–3Quantum Physics 2% 1–2Nuclear Physics 3% 2–3Miscellaneous 2–4% 1–3Graph Analysis 1–2% 0–2Equation Manipulation 0.5–1% 0–1Significant Digits and Lab Skills 0.5–1% 0–1The chapters of this book are organizedaccording to these categories. If a physics topic is not in this book,you don't need to know it. Here's some other helpful information:You need to know: the formulas expressing physical relationships (such as F = ma), how to manipulate equations, how to read a graphYou don't need to know: trig identities, calculus, three-dimensional vectors and graphs, physical constants (such as G = 6.6710–11 N·m2 ⁄ kg2)SAT物理练习题1SAT物理练习题一SAT Physics Practice Test OneQuestion 1:An object of mass m moving with a velocity v collides with another object of mass 2m. The two objects stick together and they collide with a third object of mass 3m. After the second collision the three objects move together at the same speed. What is the velocity of the three objects after the second collision?v/12v/6v/3v/2vQuestion 2:An electric motor accelerates its rotation with a constant angular acceleration of 2 rad/s2 until it reaches a frequency of f = 10/¶ Hz. If the motor starts from rest, how long does it take to reach frequency f?6s10s¶s12s15sQuestion 3:Two satellites orbit the earth at radii r1 and r1. What is the ratio of the velocities of the two satellites?Question 4:250J of heat are added to a gas in a cylindrical container and then the gas does 120J of work on the top and bottom walls of the cylinder. What is the change in internal energy for the gas?0J120J130J250J-120JQuestion 5:Three point charges of charge +Q are placed as shown above. At what point will a negative charge experience a force toward the bottom of the page?ABCDEQuestion 6:Resistor R1= 5Ω and resistor R2= 10Ω are connected in series to a voltage source E = 60V. What is the ratio between the power dissipation in R2 and the power dissipation in R1?12345Question 7:Resistor R1= 4Ω and resistor R2= 6Ω are connected in series. If the tolerance of R1 is 1% and the tolerance of R2 is 2%, what is the tolerance of the equivalent resistor R?.8%1%1.6%2%3%∙Question 1 solution:According to the law of conservation of momentum,mv = (m + 2m)v1 and,(m + 2m)v1 = (m + 2m + 3m)v2, where v1 and v2 are the speed after the first and after the second collision.In conclusion, mv = 6mv2 and v2 = v/6.∙Question 2 solution:t = ω / ε = 2πf / εwhere ω is the angular speed and ε is the angular acce leration.t = 2π(10/π) / 2t = 10s.∙Question 3 solution:We equate the formulas for gravitational force and centripetal force:mv2/r = GmM/r2r = radius of the orbit;m = mass of satellite;M = mass of planet;v = speed of satellite;v12 = GM/r1v22 = GM/r2∙Question 4 solution:According to the First Law of Thermodynamics, the change in internal energy is equal to the change in heat plus the work done on the system.ΔU = ΔQ + ΔW = 250J - 120J = 130J.∙Question 5 solution:A and D are the only points that have the horizontal component of the force equal to zero.A negative charge experiences a force toward the bottom of the page in point A and towards the top of the page inpoint B.(a) is the correct answer.∙Question 6 solution:P2 = R2I2P1 = R1I2We divide the 2 equations and,P2/P1 = R2/R1P2/P1 = 100/50P2/P1 = 2∙Question 7 solution:R1(1 + t1) + R2(1 + t2) = R(1 + t),We also know that R1 + R2 = R.We substract the second equation from the first equation:R1t1 + R2t2 = Rt,t = (R1t1 + R2t2)/Rt = (4·1% + 6·2%)/10t = 1.6% is the tolerance of the series resistor combination.SAT物理练习题2SAT物理练习题二SAT Physics Practice Test TwoFive particles charged with the same charge +q move with the same speed v in a magnetic field B, as shown above. Which particle experiences the highest magnetic force?ABCDEQuestion 2:Two wires of circular cross-sectional areas have resistances R1 and R2.If ρ1= 2ρ2, l1 = 2l2 and r1 = 2r2, what is the ratio R1/R2?ρ1, ρ2 are the resistivities of the two wires,l1, l2 are the lengths of the two wires,r1, r2 are the radii of the two wires.11/21/424Two wires carry identical currents I, as shown above. At which point is the magnetic field the strongest?ABCDEQuestion 4:Two metallic bars slide along metallic rails at speeds v1 = .1m/s and v2 = .2m/s as shown above. The bar and the rails are situated in a magnetic field of 4T. What is the induced voltage in the bar and rails?20mV30mV40mV120mV150mVQuestion 5:A police car with its siren on travels at a speed v1 toward a person. The frequency of the siren is f1 and the person hears the sound at a frequency f2. If v s is the speed of sound, v1 =v s f2/f1v s(1 - f2/f1)v s(f1/f2 - 1)v s(1 - f1/f2)v s(f2/f1 - 1)Question 6:Violet light has a wavelength of 400nm. What is its frequency, if the speed of light is 3·108?5·10147.5·101410152·10155·1015Question 7:The activity of a radioactive sample at time t = 0s is A0 and the activity of the same radioactive sample at time t1 is A1. What is the decay constant of the sample?[ln(A1/A0)]/t1[ln(A0/A1)]/t1[ln(A1 - A2)]/t1[ln(A1/A0)]t1e(A1/A0)t1SAT2物理练习题参考答案与解析参见下一页∙Question 1:Five particles charged with the same charge +q move with the same speed v in a magnetic field B, as shown above. Which particle experiences the highest magnetic force?Solution: The magnetic force experienced by a moving particle is given by the formula F = q(v x B). We can maximize F by ensuring that the speed and the magnetic field are perpendicular to one another. Particule A is the correct answer.∙Question 2:Two wires of circular cross-sectional areas have resistances R1 and R2.If ρ1= 2ρ2, l1 = 2l2 and r1 = 2r2, what is the ratio R1/R2?ρ1, ρ2 are the resistivities of the two wires,l1, l2 are the lengths of the two wires,r1, r2 are the radii of the of the cross-sectional areas of the two wires.Solution:R1= ρl11/A1= ρ1l1/(¶r12)R2= ρ2l2/(¶r22) = (ρ1/2)(l1/2)/(¶r12/4) = ρ1l1/(¶r12)R1/R2 = 1.∙Question 3:Two wires carry identical currents I, as shown above. At which point is the magnetic field the strongest?Solution:Points D and B are situated at equal distance from the two wires and the magnetic field is 0 at these points. As the magnetic fields created by the two currents have opposite directions at points A, C and E, the strongest magnetic field will be at point A, because the component generated by the "horizontal" current is much lower than the one created by the "vertical" one.∙Question 4:Two metallic bars slide along metallic rails at speeds v1 = .1m/s and v2 = .2m/s as shown above. The bar and the rails are situated in a magnetic field of 4T. What is the induced voltage in the bar and rails?Solution:e = -dΦ/dt = -B·dA/dtdA/dt = l(dx/dt) = l(v1 + v2)The induced voltage in the bar is B·l·(v1 + v2) = 120mV.∙Question 5:A police car with its siren on travels at a speed v1 toward a person. The frequency of the siren is f1 and the personhears the sound at a frequency f2. If v s is the speed of sound, v1 =Solution:The frequency heard by the person is given by the formula:f2 = [v s/(v s - v1)]f1f2v s - f2v1 = f1v sv1 = v s(f1/f2 - 1)∙Question 6:Violet light has a wavelength of 400nm. What is its frequency, if the speed of light is 3·108?Solution:f = c/λ = 3·108/400·10-9 = 7.514Hz.∙Question 7:The activity of a radioactive sample at time t = 0s is A0 and the activity of the same radioactive sample at time t1 is A1. What is the decay constant of the sample?Solution:A1 = A0eλt1A1/A0 = eλt1λ = [ln(A1/A0)]/t1∙SAT物理练习题3SAT物理练习题三SAT Physics Practice Test ThreeQuestion 1:What is the magnitude of the vector 3A - B in the figure above?A.3B.4C.5D.2E.6Question 2:The graph above shows the acceleration of a particle. At t = 0s, the speed of the particle is 1m/s. What is the speed of the particle at t = 4s?11 m/s9 m/s19 m/s13 m/s10 m/sQuestion 3:Forces F1 and F2 in the figure above act on a block of mass m = 10kg that moves on a frictionless surface. What is the acceleration of the block?1 m/s1.5 m/s2 m/s2.5 m/s3 m/sQuestion 4:A block of mass m is moving down an inclined plane with a decreasing speed. The coefficient of friction between the block and the plane is μ. Which of the following statements is true?sin(α) < μsin(α) > μcos(α) < μcos(α) > μtan(α) < μQuestion 5:When a car's kinetic energy increases 9 times, what happens with its speed?increases 9 timesincreases 3 timesdecreases 9 timesdecreases 3 timesremains constantQuestion 6:An object of mass 4kg is attached to a spring. The equilibrium position of the object is .4m from the point where the spring exerts no force on the object. What is the spring constant, k?10 N/m80 N/m100 N/m150 N/m200 N/mQuestion 7:An object of mass 10kg sitting on a frictionless horizontal plane is moved from a stationary state by the force shown above. What is the velocity of the object at time t = 5s?2.5 m/s3 m/s4 m/s5 m/s6 m/sSAT2物理练习题参考答案与解析参见下一页Question 1:What is the magnitude of the vector 3A - B in the figure above?Solution:The magnitude of the vector 3A is 3 and the magnitude of vector B is 4. The angle between vectors 3A and B is 90o. According to the Pythagorean theorem, the magnitude of 3A - B is 5.o Question 2:The graph above shows the acceleration of a particle. At t = 0s, the speed of the particle is 1m/s. What is the speed of the particle at t = 4s?Solution: At t = 2s, the speed of the particle is v2s = v0s + 2m/s2·2s = 5m/s.At t = 4s, the speed of the particle is v4s = v2s + 3m/s2·2s = 11m/s.o Question 3:Forces F1 and F2 in the figure above act on a block of mass m = 10kg that moves on a frictionless surface. What is the acceleration of the block?Solution: F1cos(60o) + F2cos(60o) = m·a20·1/2 + 30·1/2 = 10·a25 = 10·aa = 2.5m/s2o Question 4:A block of mass m is moving down an inclined plane with a decreasing speed. The coefficient of friction betweenthe block and the plane is μ. Which of the following statements is true?Solution: mg sin(α) - �mg cos(α) = aThe speed is decreasing so a < 0. This means thatmg sin(α) - �mg cos(α) < 0mg sin(α) < �mg cos(α)tan(α) < �o Question 5:When a car's kinetic energy increases 9 times, what hapens with its speed?Solution: The car's initial kinetic energy is E i = mv i2/2 and the final kinetic energy is E f = mv f2/2.E f/E i = (v f/v i)2(v f/v i)2 = 9v f/v i = 3o Question 6:An object of mass 4kg is attached to a spring. The equilibrium position of the object is .4m from the point where the spring exerts no force on the object. What is the spring constant, k?Solution:F = kxmg = kxk = mg/xk = 40N/.4mk = 100N/mo Question 7:An object of mass 10kg sitting on a frictionless horizontal plane is moved from a stationary state by the force shown above. what is the velocity of the object at time t = 5s?Solution: The area under a force versus time graph gives us the impulse given to the object.p = 10/2 + 30 + 10/2 = 40 kg m/sv = p/mv = 4 m/s。
SAT2物理力学常见公式
SAT2物理力学常见公式据360教育集团介绍:下面为大家整理和总结的是关于SAT2物理常见公式的相关内容，重要是介绍了力学方面的公式。
sat2物理公式的记忆对于大家正确并且快速的解答相关题目有非常重要的影响，我们就一起来看看这些SAT2物理公式的详细内容吧。
Physics Formulas - MechanicsKinematics FormulasThe Kinematic Equations apply to one-dimmensional motion with costant acceleration from point 1, situated d1 from a point of reference to point 2, situated d2 from the same point of reference. v1 is the velocity at point 1 and v2 is the velocity at point 2.v2 = v1 + a·td2 = d1 + (v1 + v2)·t/2d2 = d1 + v1·t + a·t2/2d2 = d1 + v2·t - a·t2/2v22 = v12 + 2a(d2 - d1)Average velocity: vav = Δd/ΔtAverage acceleration: aav = Δv/ΔtRotational kinematics equations with constant angular acceleration:ω2 = ω1 + α·tΦ2 = Φ1 + (ω1 + ω2)·t/2Φ2 = Φ1 + ω1·t + α·t2/2Φ2 = Φ1 + ω2·t - α·t2/2ω22 = ω12 + 2α(Φ2 - Φ1)Average angular velocity: ωav = Δθ/ΔtAverage angular acceleration: αav = Δω/ΔtFrequency: f = ω/2πPeriod: T = 2π/ωRelations between angular and linear variables: l = Φ·rv = ω·ra = α·rDynamics FormulasPressure: P = F/ANewton's Second Law: F = m·aForce of kinetic friction: Ff = μ·NHooke's Law: F = -k·xCentripetal Force: Fc = m·v2/RCentripetal acceleration: ac = v2/RWork, Energy, Conservation Laws Formulas Work: W = F · d = Fdcos(α)Potential Energy: PE = m·g·hKinetic Energy: KE = m·v2/2Mechanical Energy: E = KE + PEInstantaneous Power: P = F·vThe Work-Energy Theorem: W = ΔKEGravitation FormulasNewtonian gravity formula: Fg = G·m·M/R2 Kepler's Third Law: T2/a3 = ct.以上就是关于力学的SAT2物理常见公式的全部内容，非常详细，根据知识点的不同分成了不同的类别。
盘点SAT2物理核心知识点
盘点SAT2物理核心知识点对于SAT2物理来说，根据SAT2物理要求，掌握SAT2物理知识点和公式是备考的关键。
小编就来详细谈谈核心知识点，希望对同学们备考有所帮助，赶紧一起来看看吧!一.运动和力-Newton’s First Law of motion: 惯性(inertia)定律-Newton’s Second Law: F=ma-Newton’s Third Law: 作用力和反作用力易错点：在做关于匀速运动的概念选择题的时候，由于匀速圆周运动的velocity(矢量)是改变的，而速率speed(标量)是不变的，且有a uniform acceleration，所以要稍微注意一下!二.能和功率-Hooke’s Law: F=kx-弹性势能U=1/2kx^2三.动量和冲量这一章我觉得好难(???)好像被我们的高考考纲删掉了?所以这一章多啰嗦一点吧，掌握得好的小伙伴可以选择略过。
-动量momentum: p=mv (注意v有正负)-冲量impulse：J =F△t =mvf -mvi (再次强调：注意v有正负)*可以画F-t 图像解决冲量计算问题-Perfectly elastic collision：Linear momentum 和Kinetic energy 都守恒-Inelastic collision：Linear momentum 守恒Kinetic energy变小*Explosions are the reverse of inelastic collisions四.引力-Kepler’s First Laws: 天体的椭圆轨道-Second Laws: T相同，天体扫过面积相同-Third Laws：T2和R3成正比-Newton’s Law of Gravity五.电大家要是忘记这块的公式(反正我是经常忘…)用力学中的公式这样推：电场中的E 相当于g; q相当于m; k相当于G;比如Coulomb’s Law F=kq1q2/r2 和万有引力公式a electron and a proton 的Charge=1.6x10-19cPs：这块的公式比较多而且杂就不一一罗列了大家再翻一遍Barron附录的公式汇总就可以，注意点电荷和匀强电场不同的公式喔。
sat2物理知识点
SAT2物理知识点对于参加SAT2物理的考生来讲，首先需要掌握物理考试中的知识点，因此下面小编为大家重点介绍的就是SAT2物理知识点以及相关的备考注意事项，希望对大家有帮助。
一.物理学的考察内容考察题量：75道选择题考试时长：1小时1. Mechanics 力学36–42%(1)Kinematics运动学，包括：速度，加速度，单向运动和抛物线运动(2)Dynamics动力学，包括：牛顿定律，静力学和摩擦(3)Energy and Momentum能量和动量，包括：位能与动能，功，功率，推动力和守恒定律(4)Circular Motion圆周运动，包括：匀速圆周运和向心力(5)Simple Harmonic Motion简谐运动，包括：弹簧和钟摆上的质量(6)Gravity重力，包括：万有引力定律，轨道和开普勒定律2. Electricity and Magnetism电磁学 18–24%(1)Electric Fields, Forces and Potentials电场，电力和电位，包括：库仑定律，感应电荷，电场中的带电粒子(2)Capacitance电流容量(3)Circuit Elements and DC Circuits电路元素和直流电路，包括：电阻器，灯泡，串联和并联，欧姆定律，焦耳定律(4)Magnetism磁学, 包括：永磁体，电场中的电流，粒子所产生的场，法拉第定律(Faraday’s law)，楞次定律(Lenz’s law)3. Waves and Optics波和光学15–19%(1)General Wave Properties一般波的性质, 包括：波速，波频，波长，波叠加，驻波衍射standing wave diffraction，多普勒效应(Doppler effect)(2)Reflection and Refraction反射和折射，包括：斯涅耳定律Snell’s law，波长和波速的变化(3)Ray Optics射线光学，包括：使用针孔，反光镜和透镜成像，(4)Physical Optics物理光学, 包括：单缝衍射single-slit diffraction，双逢干涉double-slit interference，极化和颜色polarization and color4. Heat and Thermodynamics 热力学6–11%(1)Thermal Properties热力的性质, 包括：温度，热传递，specific and latent heats，热膨胀(2)Laws of Thermodynamics热力学定律, 包括：第一和第二定律，内能，熵和热机的效率entropy and heat engine efficiency5. Modern Physics 现代物理学6–11%(1)Quantum Phenomena量子现象, 包括：光子和光电效应photons and photoelectric effect(2)Atomic原子,包括：卢瑟福和玻尔模型the Rutherford and Bohr models，原子能级，原子光谱(3)Nuclear and Particle Physics原子和粒子物理, 包括：放射现象，原子反应和基本粒子such as radioactivity, nuclear reactions and fundamental particles(4)Relativity相对论, 包括：时间膨胀，长度收缩，质能等价性mass-energy equivalence6. Miscellaneous其他方面4–9%(1)General综合考察, 包括：物理学发展史，物理学中的重要问题(2)Analytical Skills分析技能，包括：图表分析，测量和数学能力(3)Contemporary Physics当代物理学, 包括：天体物理学，超导和混沌理论superconductivity and chaos theory二.能力要求1. 熟练掌握物理学中的重要概念并能够灵活的解决物理中的实际问题，其中Recall：20–33%，这类问题只要是记忆和理解基本的概念和信息Single-Concept Problems: 40–53%，这类问题要求能够运用物理关系Multiple-Concept Problems: 20–33%，这类问题要求能够熟练运用两种或多种物理关系2. 掌握简单的代数，三角学，图形关系，比率和比例的概念以及这些物理问题的应用3. 熟练掌握在物理现象中实验技能的应用三.备考注意事项1. 在物理考试中很少会用到数学计算，只会用到一些简单的运算。
SAT2-物理3-2(课件)第四章 电磁感应 3
雨柔并不知情。
的可爱，因而乎这些人纷纷拿出手机来跟咱们合影，此中不乏有迷恋雨漂亮色的人，只不外这些人想合影只是他们自己一厢情愿罢了，我可没有容许他们任何一人，至于说受到我拒绝以后还不死心之辈，我只能施以处分，惩前毖后了，虽然我动手很轻，只不外是点了他们的太冲穴让他们大笑不止半个时刻罢了，实在许多武侠小说中常常提到的“笑穴”是存在
罢被这两个小家伙一吵我也睡不着了，再说闻到这诱人的饭香我还真有些饿了。
早餐事先，在两个小家伙满心的等待下，咱们出前去姬家，本日的天空万里无云甚是阴森，爲了不引起把稳我特地提高了飞行的高度，空中的罡风可不是两个小家伙能接受的住的，不外有了护身罩的防护这倒不算什麼，一个小时后，咱们离开了姬家的上空，找了一处无
你瞧我这头脑，真是年事大了头脑都不中用了，这可不是在等你和大蜜斯吗？哎如何没见大蜜斯呢？”听到福伯的询问，雨柔这才从一旁走了进去，笑着跟福伯打了声召唤：“福伯，您迩来身材可好啊？”灵儿亦是谦谦有礼的叫了一声“福爷爷”，福伯看到雨柔后赶紧说道：“劳烦大蜜斯挂记了，老奴身材很棒，哎呀这灵儿都长这麼大了啊，嘻嘻。”或许是
挂在了后头上，歪才的碰击没有对它构成任何损害，张牙舞爪的向张小强再次扑来。他用眼角的余光瞄了一眼他打倒的榜首只丧尸，正蒲伏在地上向他爬了曩昔，一只小腿现已被他打。凑合丧尸来说对血肉的盼望高于一切，这是一种发自骨子里的盼望，让它天分向他接近，将他嚼碎扯烂吞进嗓子里才
声的问雨柔说：“大蜜斯，这是……？”听到福伯的疑难，雨柔笑着说：“福伯，这是彤彤，我和明阳的女儿。”只听福伯“哦”了一声后，脸色就立马变为了笑容非常快活地说：“彤彤，恩好名字，这真是意外之喜啊，估计老爷和夫人如果见到彤彤以后会更快活，好了，大蜜斯，姑爷，咱们照样赶紧进去吧，别让老爷和夫人等得焦急了。”我和雨柔都点了
SAT2-物理3-1(课件)第二章 恒定电流 2-2
负极 电势能
化学
正极
电能
电磁
√ √
×
√
电动势和内电阻
伏特
功
电荷量
电动势
本领
负极
标量
体积
电能 1C
电源本身
内阻
内部 电动势
总电荷量
放电状态
体积
容量
内阻
√ ×Leabharlann × ×√单位
伏特(V)
正负 含义
电流流过电阻，电势降落，沿电流方向为正，逆电流方向为负
决定 因素
由电源及导体的电阻和连接方式决定
人的中间落了下来，因为本日是冰儿和娴儿的华诞，以是姬家显得非分特别的繁荣，后方祝贺的达官显贵政商名流非常多，此中许多人都是带着自家的孩子前来的，此中的启事不过便是想抱上姬家这颗大树罢了，至于他们能不能如愿以偿，那就很难说了。
底本我是想着给雨辰打个德律风让他进去接咱们的，不外雨柔提醒我说来日诰日是冰儿和娴儿
“扑通……”丧失扑倒在地上。
“两米、一米、就是如今！”
没时辰多想，趁着这只丧尸翻到在地，张小强抛弃损
坏的铁皮锅盖，双手紧握铁枪向残剩的一只丧尸冲了曩昔，近身，左腿向前跨步成弓形。瞄准丧尸丑恶的走漏铁枪急刺。
三角形的枪头刺入丧尸的喉管，再钻入颈椎骨从后颈探出头签字来，张小强从左至右迁移窜改枪身，三角锉刀搅碎了丧尸颈部的皮肉和骨骼轻松抽了出来，一个血肉筑成的洞口呈现在丧尸的颈部。丧尸的头颅连着残剩的皮和筋肉
一下子，而我在福伯现咱们后就笑着说道：“福伯，您这几年身材可好啊？嘻嘻”福伯这才回过神来轻微有些爲难的挠了挠头说：“呵呵，我说你小子明知道福伯我年纪大了眼睛花了，还故意的来逗我这白叟家啊。”而我则回答道：“哈，如何会呢？对了福伯我看你东张西望的彷佛在等什麼人，不会便是在等我跟雨柔吧。”这时候福伯才一拍后脑勺说：“唉
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SAT2考试物理考点分析
据360教育集团介绍:下面为大家整理和总结的是关于SAT2物理考点的介绍，是中文版的，方便考生在备考的时候进行借鉴。
SAT2物理考试的考点是大家在备考的时候一定要拿下的，这样才能在后面的模拟考试中有的发挥。
力
在滑轮的两侧分别是10N和6N的球，那么10N球上方绳子的拉力是多少?6~10N
如果两个相同物体，处在同一高度，用同一速度射出，那么无论是朝哪一个方向射出，落地的动能都是相等
在匀速圆周运动中，向心力是由摩擦力friction提供的
热
heat of vaporization和heat of fusion都是出现在温度不变状态变的时候。
而状态不变温度改变的时候应该使用比热容specific heat。
heat of vaporization总是比同一物体的heat of fusion大。
想想就明白。
金属因为有很多自由电子，所以导电导热都很厉害。