unit one

"suvat" equations of uniform acceleration

• s = vt
• v = u + at
• v^2 = u^2 + 2as
• s = ut + 1/2at^2
• s = vt - 1/2at^2
• s = 1/2(u + v)t

mechanics

• E(grav) = mgΔh
• E(kinetic) = 1/2mv^2
• F = ma
• g = F/m
• W = mg
• ΔW = FΔs

material physics

• ε = Δx/l {strain}
• σ = F/A {strain}
• E = σ/ε {Young modulus}
• F = kΔx {Hooke's law}
• F = 6πrηv {Stokes' law}
• ρ = m/V
• p = F/A
• E(el) = 1/2FΔx

unit 2

waves

• v = fλ {wave equation}
• μ = sin(i) / sin(r) = v1 / v2 = λ1 / λ2 {refractive index/snell's law}

electricity

• V = W/Q
• V = IR
• P = IV
• W = VIt
• % efficiency = (useful energy output / total energy input) x 100
• % efficiency = (useful power output / total power input) x 100
• P(in) = FA {solar flux}
• R = ρl/A {resistivity}
• Q = It
• ε = V - Ir
• I = nAvq
• R = R1 + R2 + R3 {series}
• 1/R = 1/R1 + 1/R2 + 1/R3 {parallel}

quantum physics

• E = hf
• hf = Φ + 1/2mv^2
• λ = h/mv {de Broglie wavelength}