Mechanics | Keys |
---|---|
d = 0.5 g t2 Fg = (G m1 m2 )/r2 g = (4 p² L)/t2 P = F/A r = m/V v = d/t W = F·d (dot product) T = F × d (cross product) |
A = Area a = coeficient of linear friction c = specific heat capacity D = change in d = distance F = Force Fe= Electrical force Fg = Force of gravitational attraction f = frequency g = acceleration of gravity G = 6.67 x 10-11 i = current L = Length Li = initial length Lf = final length DL = change in length ( Lf - Li ) l = waveLength m = mass P = power P = Pressure r = density p = 3.1415926535897932384626433832795... q = charge Q = Energy or Work ( usually in calories) r = radius R = Resistance t = time Tf = final Temperature Ti = initial Temperature DT = change in Temperature (Tf - Ti) T = Torque t = period v = velocity V = Voltage V = Volume W = Energy or Work (usually Joules) |
Heat | |
Q = m c DT DL = a Li DT DT = Tf - Ti |
|
Waves and Sound | |
v = f l f = 1/t |
|
Electricity | |
Fe = [(9×109) q1 q2 ]/r2 i = q/t P = i V V = i R P = i2 R |