Hookes law: F = -kx
where F = force, k = spring constant, x = distance

WAVES:
 v = λf

SOUND:
 I = P / 4πr2

decibels: dB = 10dB * log(I / I0)
where I = intensity and I0  =  threshhold of hearing = 1.0 * 10-12 W/m2
REMEMBER: a difference of 10dB makes a sound 2* as loud

LIGHT:
  Law of Reflection: ϴ' = ϴ1

CURVED MIRRORS:
  focal point (f) = r / 2
   :(1 / o) + (1 / i)  = (1 / f)
   where o = object distance, i = image distance, f = focal length

MAGNIFICATION:
   M = h'/h = -i/o

SNELL'S LAW:
    sin(ϴi) / sin(ϴr) = nr / nr 

CHARGE:
   proton = qp = 1.6 * 10-19 C
   electron = qe = -1.6 * 10-19 C

COULOMB'S LAW:
    Fe = Kc(q1q2 / r2)
   where K[c] = 8.99 * 10^9 Nm^2/C^2

   E = F[e] / q[0] = K[c]q / r^2
   where E = electric field strength in N/C

   P[electric] = -q[0]Ed
   where P = potential, E = electric field strength and d = distance from field source

   V = P[electric] / q[0] = -Ed

   VOLTS = J/ C = Nm / C

   I = Δq / Δt
   where I = current, in amperes

OHM'S LAW:
   V = IR

   P = ΔVI = RI^2 = (ΔV)^2 / R

REMEMBER NOTES ARE IN C-SYNTAX STYLE

OTHER:
   force = newtonw = mass * acceleration
   energy = joules = Nm
   work = energy / time = J / s = Fdsin(θ)