SAT2物理考试最常见的公式列举

　　熟习sat2物理公式,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。下面就是为大家总结的sat2物理常用公式,希望对同学们有所帮助。

　　sat ii物理力学常见公式physics formulas - mechanics

　　kinematics formulas

　　the 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·t

　　d2 = d1 + (v1 + v2)·t/2

　　d2 = d1 + v1·t + a·t2/2

　　d2 = d1 + v2·t - a·t2/2

　　v22 = v12 + 2a(d2 - d1)

　　average velocity: vav = δd/δt

　　average acceleration: aav = δv/δt

　　rotational kinematics equations with constant angular acceleration:

　　ω2 = ω1 + α·t

　　φ2 = φ1 + (ω1 + ω2)·t/2

　　φ2 = φ1 + ω1·t + α·t2/2

　　φ2 = φ1 + ω2·t - α·t2/2

　　ω22 = ω12 + 2α(φ2 - φ1)

　　average angular velocity: ωav = δθ/δt

　　average angular acceleration: αav = δω/δt

　　frequency: f = ω/2π

　　period: t = 2π/ω

　　relations between angular and linear variables:

　　l = φ·r

　　v = ω·r

　　a = α·r

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　　dynamics formulas

　　pressure: p = f/a

　　newtons second law: f = m·a

　　force of kinetic friction: ff = μ·n

　　hookes law: f = -k·x

　　centripetal force: fc = m·v2/r

　　centripetal acceleration: ac = v2/r

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　　work, energy, conservation laws formulas

　　work: w = f · d = fdcos(α)

　　potential energy: pe = m·g·h

　　kinetic energy: ke = m·v2/2

　　mechanical energy: e = ke + pe

　　instantaneous power: p = f·v

　　the work-energy theorem: w = δke

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　　gravitation formulas

　　newtonian gravity formula: fg = g·m·m/r2

　　keplers third law: t2/a3 = ct.

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　　sat ii物理热力学常见公式physics formulas - thermodynamics

　　heat added or emoved: q = m·c·δt

　　change in internal energy: δu = q - w

　　boyles law: p1v1 = p2v2

　　charless law: v1/t1 = v2/t2

　　efficiency of a heat engine(%): e = (w/qhot)·100

　　sat ii物理光波学常见公式physics formulas - waves and optics

　　snells law: n1·sin(θ1) = n2·sin(θ2)

　　wave speed: v = λ·f

　　velocity of light: v = c/n

　　magnification: m = -di/do

　　law of reflection: θreflection = θincidence

　　mirror and lens equation: 1/d1 + 1/d1 = 1/f

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　　sat ii物理现代物理常见公式physics formulas - modern physics

　　the energy of a photon: e = h·f

　　matter wavelength: λ = h/p

　　relativistic factor: γ2 = 1/(1 - v2/c2)

　　de broglie wavelength: λ = h/(mv)

　　half life of radioactive material: thalf = ln(2)/λ

　　mass energy equivalence: e = mo·c2

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　　sat ii物理电磁学常见公式physics formulas - electricity and magnetism

　　electric fields and forces formulas

　　coulombs law: f = k·q1·q1/r2

　　electric field of a charge q: e = k·q/r2

　　work done by electric field: w = q·e·d

　　electric field between two metallic plates: e = v/d

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　　dc circuits formulas

　　ohms law: v = i·r

　　power dissipated in a resistor: p = i·v = v2/r = r·i2

　　resistance: r = ρ·l/a

　　equivalent resistance of series resistors: rs = r1 + r2 +...

　　equivalent resistance of parallel resistors: 1/rp = 1/r1 + 1/r2 +...

　　equivalent capacitance of series capacitors: 1/cs = 1/c1 + 1/c2 +...

　　equivalent capacitance of parallel capacitors: cp = c1 + c2 +...

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　　magnetic fields and forces formulas

　　magnetic force on a moving charge: f = q(v x b) = q·v·b·sin(θ)

　　magnetic force on a current carrying wire: f = i·l·b·sin(θ)

　　magnetic field created by a current: b = (μo/2π)·(i/r)

　　faradays law: e = -dφ/dt

　　以上就是sat2物理常用公式。同学们在平时的训练中,要结合具体例题去体会它们的用法。从而在考场上能达到信手拈来的程度,争取顺利通过sat2物理考试。