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The Big 5
 1) x = vt = ½ (v_{0 }+ v)t
 2) x = v_{0}t + ½ a t^{2}
 3) x = vt  ½ a t^{2}
 4) v = v_{0 }+ at
 5) v^{2} = v_{0}^{2} + 2ax
 6) v = (2gh)^{1/2}



Hooke's Law
 ∆L = FL/EA
 *where E is the modulus of elasticity




Power (with respect to work)
 P = W/t = Fv
 * only if F//v

Density of H_{2}O
ρ = 1000 kg/m^{3} = 1 g/cm^{3}

Bernoulli's Equation
P_{1 }+ ρ_{1}gy_{1} + ½ ρv_{1}^{2}= P_{2} + ρ_{2}gy_{2} + ½ ρv^{2}

Pascal's Law
F_{1} / A_{1 }= F_{2} / A_{2}

Volume Flow Rate and Continuity Equation
 Q = AV
 A_{1}V_{1 }= A_{2}V_{2}

Hydrostatic Pressure
P = P_{0} + ρgD = P_{atm }+ ρgD (if P at surface is P_{atm})

Fraction Submerged
 % submerged = V_{sub} / V_{object} = ρ_{ojbect }/ ρ_{fluid}


Power in AC Circuit
P = i_{rms}V_{rms }= i_{max }/ √2 * V_{max} / √2


Potential Energy of Spring
PE = ½ kx^{2}

Frequency of Pendulums and Springs
 Springs: w = 1/2π √k/m (wackem)
 Pendulums: w = 1/2π √g/l (wiggle)

Harmonic Wavelength of Open Pipe and Closed Pipe
 Open: λ = 2L/n
 Closed: λ = 2L/n

Coulomb's Law
F_{E} = k Qq / r^{2}

Electric Field due to Q
E = k Q/r^{2}

Electric Force by Field
F_{E} = qE

Electric Potential Due to Q
V = kQ/r

Magnetic Force
F_{M} = qvB sin θ

Capicitance
C = kε_{0}A/D = Q/V

Electric Field Between Plates

Potential Energy of Capictors
PE = ½QV = ½CV^{2}

Capacitors in Parallel
C_{p} = C_{1} + C_{2} + ...



Intensity in dB
β = 10 log I/I_{0}

Doppler Effect
 f_{D} = f_{s * }v ± v_{D} / v + v_{s}
 *approaching means increasing f_{ }_{}

index of refraction
n = c/v

Total Internal Refraction
 sin θ_{crit} = n_{2} / n_{1}
 *where n_{2 }<_{ }n_{1}
