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Phy 133: Things to know: The following things were deliberately left off of the "Tables and Formulas" handout, because you should know them. Newton's 3rd law: If A exerts a force on B, then B exerts an equal and opposite force on A. Weight: W = mg 2 Kinetic energy at non-relativistic speeds: KE = ½mv Gravitational potential energy: in a uniform field: Ug = mgh Momentum: Angular momentum of a particle: Conservation Laws (E, & ) Pressure: P = F/A (F = force, A = area) T = 1/f (T = period, f = frequency) v = fλ (f = frequency, v = speed of wave, λ = wavelength.) From Phy 132: Definition of potential: V = UE/q (Potential difference: ΔV = ΔUE/q) sec. 5: - speed of light in a vacuum: c = about 3 x 108 m/s sec. 6: - Energy of a photon: E = hf (h = Planck’s constant, f = frequency)