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# MCAT Physics Info

### Formulas that you need to know for the MCAT

Distance (vi, vf, t) ½(vi+vf)t
Velocity (vi, a, t) vi+at
Distance (vi, t, a) vi*t+½at^2
Distance (vf, t, a) vf*t-½at^2
sin(30°) or cos(60°) .5
sin(45°) or cos(45°) .7
sin(60°) or cos(30°) .85
Force of Gravity GMm/r^2
Centripetal Force mv^2/r
Power W/t=F*d/t=F*v
Momentum mv (Pi=Pf)
Gauge Pressure dρg
Force of Buoyancy ρVg
Bernoulli's Equation P+½ρv^2+ρgh = P+½ρv^2+ρgh
sqrt(2) 1.4
sqrt(3) 1.7
Electric Force kQq/r^2
k 9E9 []=N*m^2/^2
Electric Field kQ/r^2 []=N/C=V/m
Electric Potential kQ/r []=J/C=V
Charge of Capacitor VC
Potential Energy of Capacitor ½QV
Magnetic Force qvB
Work Done by Magnetic Force 0
Frequency of Spring (1/2π)sqrt(k/m)
Frequency of Pendulum (1/2π)sqrt(g/L)
Force of Spring -kx
Potential Energy of Spring ½kx^2
Electric Field of Capacitor V/d
Kinetic Energy ½mv^2
Work F*d
Frictional Force µ*F(N)
Impulse F*t
Stress F/A
Strain ΔL/L
Change in Length FL/EA
Centripetal Acceleration v^2/r
Net Force ma
Elementary Electric Charge 1.6E-19
Density of Water 1000kg/m^3 = 1g/cm^3
Speed of Light 3E8
Current (Q, t) Q/t
Voltage (I, R) IV
Resistivity (ρ, L, A) ρL/A
Power in Circuit IV = I^2R = V^2/R
RMS (MAX) MAX/sqrt(2)
MAX (RMS) RMS*sqrt(2)
Increase of 10 dB (Initial Intensity) * 10
Harmonic Frequency of Standing Wave With Two Fixed Ends (n/2L)v (n = 1, 2, 3, ...)
Harmonic Frequency of Standing Wave With One Fixed End (n/4L)v (n = 1, 3, 5, ...)
Alpha Decay (α) ΔA = -4, ΔZ = -2
Beta Decay (β-) ΔA = 0, ΔZ = +1
Beta Decay (β+) ΔA = 0, ΔZ = -1
Molality moles of solute/kg of solvent
Doppler Effect fd = fs(v±vd)/(v±vs)
Intensity P/A []=W/m^2
Photon Energy E=hf=hc/λ
Magnification -i/o
Mirror (and Lens) Equation (1/o)+(1/i)=(1/f)
Lens Power P=1/f
Index of Refraction n=c/v
Volume of One Mole of Ideal Gas at STP 22.4L
Visible Spectrum Red λ=700nm - Violet λ=400nm
STP P = 100 kPa, T = 273 K
Hearing Threshold 10E-12 W/m^2
Lens Power 1/focal length
Focal Length R/2
Created by: mfeigley