density = mass / volume

pressure = force / area

Pressure = density x gravity x height

Boyles Law

The Pressure Law

Voltage = Current x Resistance

Charge = Current x time

Power = Current x Voltage

Energy = Current x time x Voltage

wave speed = frequency x wavelength

frequency = 1/Time Period

Efficiency =

refractive index = sine (angle of incidence) / sine (angle of refraction)

refractive index = 1 / sine (critical angle)

Work Done = Force x displacement

Gravitational Potential Energy = mass x gravity x height

Kinetic Energy = 1/2 (mass x speed^2)

Power = Work Done / time

GPE gained = KE lost

average speed = distance moved / time taken

acceleration = (change in velocity) / time taken

Force = mass x gravity

Weight = mass x gravity

Moment =