Physics Equations

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Author:
Surferbeast
ID:
107868
Filename:
Physics Equations
Updated:
2011-10-10 19:06:26
Tags:
Physics
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Description:
MCAT Physics Equations
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  1. vf = vo + at (Missing x)
    x-xo = vot + (at2)/2 (Missing vf)
    v2 = vo2 + 2a(x-xo) (Missing t)
    Δx = vt = [(vo + vf)/2]t (Missing a)
    Kinematic Equations (Translational Motion Equations)
  2. Fmax = μΝ , μ is coefficient of friction, N is normal force

    μk < μs always
    Frictional Force
  3. Fc = mac = mv2 /rac= v2 /r
    Uniform Circular Motion
  4. I = F Δt = ΔMM = mv
    Momentum, Impulse
  5. W = F d cosθ

    P = ΔW/Δt
    Work, Power
  6. Total E = Ek + Ep

    E = mc2
    Energy (conservation)
  7. F = -kx, k is spring coefficient

    W = kx2 /2
    Spring Force, Spring Work
  8. A v = const.

    ρAv = const.
    Continuity (fluids)
  9. I = Q/tR = ρl/A
    Current and Resistance
  10. Series - Req = R1 + R2 . . .

    Paired - 1/Req = 1/ R1 +1/ R2...
    Resistors (series, par.)
  11. dB = 10 log 10 (I/I0 )

    beats = Δ f
    Sound
  12. Σi = 0 at a junction

    ΣΔV = 0 in a loop
    Kirchoff's Laws
  13. Q = mc Δ T (MCAT !)
    Q = mL
    Thermodynamics
  14. L1 = F1× r1 (CCW + ve)

    L2 = F2 × r2 (CW - ve)
    Torque Forces
  15. ΣFx = 0 and ΣFy = 0

    ΣL = 0
    Torque force at EQ
  16. (sin θ1 )/(sin θ2 ) = v1 /v2 = n2 /n1 = λ1 /λ2

    n = c/v
    Refraction
  17. F = ma
    Force
  18. vav = Δ d / Δ t

    aav = Δ v / Δ t
    Average Velocity, Average Acceleration
  19. KE = Ek = 1/2 mv2

    UE = Ep = mgh
    Kinetic and Potential Energy
  20. Ρ = F/A

    Δ Ρ = ρgΔh
    Pressure
  21. 1/ i + 1/ o = 1/ f = 2/r = Power

    M = magnification = - i/o
    Optics (Power and Magnification)
  22. alpha (α) particle = 2He4 (Helium nucleus)
    beta (β) particle = -1e0 (an electron)
    gamma (γ) ray = no mass, no charge, just electromagnetic energy
    Radioactive Particles
  23. Δ m/ Δ t

    Δ m = change in mass
    Δ t = change in time
    Rate of Decay
  24. W = mg = Fg
    Weight
  25. F = ( Gm1m2 ) /r2
    Gravitational Force
  26. τ = rF sin Ø
    Torque
  27. F = mv2 /r
    Centripetal Force
  28. W' = ΔE = ΔK + ΔU

    W = Fd cos Ø
    Work
  29. P = W/Δt
    Power
  30. p = mv
    Momentum (p)
  31. J = FΔt = Δp = mvf - mvi
    Impulse
  32. Elastic - 1/2m1v1i2 + 1/2m2v2i2 = 1/2m1v1f2 + 1/2m2v2f2
    Inelastic - 1/2m1v1i2 + 1/2m2v2i2 > 1/2m1v1f2 + 1/2m2v2f2
    Completely Inelastic - m1v1i2 + m2v2i2 = (m1 + m2) vf
    Collisions
  33. = (Load) (Load Distance) / (Effort)(Effort Distance)
    Efficiency = Wout/Win
  34. x = (m1x1 + m2x2 + m3x3 ...) / (m1 + m2 + m3 ...)
    Center of Mass (x)

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