# Physics Equations

 The flashcards below were created by user Surferbeast on FreezingBlue Flashcards. 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) Fmax = μΝ , μ is coefficient of friction, N is normal force μk < μs always Frictional Force Fc = mac = mv2 /rac= v2 /r Uniform Circular Motion I = F Δt = ΔMM = mv Momentum, Impulse W = F d cosθ P = ΔW/Δt Work, Power Total E = Ek + Ep E = mc2 Energy (conservation) F = -kx, k is spring coefficient W = kx2 /2 Spring Force, Spring Work A v = const. ρAv = const. Continuity (fluids) I = Q/tR = ρl/A Current and Resistance Series - Req = R1 + R2 . . . Paired - 1/Req = 1/ R1 +1/ R2... Resistors (series, par.) dB = 10 log 10 (I/I0 ) beats = Δ f Sound Σi = 0 at a junction ΣΔV = 0 in a loop Kirchoff's Laws Q = mc Δ T (MCAT !) Q = mL Thermodynamics L1 = F1× r1 (CCW + ve) L2 = F2 × r2 (CW - ve) Torque Forces ΣFx = 0 and ΣFy = 0 ΣL = 0 Torque force at EQ (sin θ1 )/(sin θ2 ) = v1 /v2 = n2 /n1 = λ1 /λ2 n = c/v Refraction F = ma Force vav = Δ d / Δ t aav = Δ v / Δ t Average Velocity, Average Acceleration KE = Ek = 1/2 mv2 UE = Ep = mgh Kinetic and Potential Energy Ρ = F/A Δ Ρ = ρgΔh Pressure 1/ i + 1/ o = 1/ f = 2/r = Power M = magnification = - i/o Optics (Power and Magnification) alpha (α) particle = 2He4 (Helium nucleus) beta (β) particle = -1e0 (an electron) gamma (γ) ray = no mass, no charge, just electromagnetic energy Radioactive Particles Δ m/ Δ t Δ m = change in mass Δ t = change in time Rate of Decay W = mg = Fg Weight F = ( Gm1m2 ) /r2 Gravitational Force τ = rF sin Ø Torque F = mv2 /r Centripetal Force W' = ΔE = ΔK + ΔU W = Fd cos Ø Work P = W/Δt Power p = mv Momentum (p) J = FΔt = Δp = mvf - mvi Impulse 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 = (Load) (Load Distance) / (Effort)(Effort Distance) Efficiency = Wout/Win x = (m1x1 + m2x2 + m3x3 ...) / (m1 + m2 + m3 ...) Center of Mass (x) AuthorSurferbeast ID107868 Card SetPhysics Equations DescriptionMCAT Physics Equations Updated2011-10-10T23:06:26Z Show Answers