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P = V x I. Power = Voltage x Current.
V = I x R. Voltage = Current x Resistance.
W = F x d. Work done = Force x distance.
W = E. Work done = Energy transferred.
P = E ÷ t. Power = Energy ÷ time.
s = d ÷ t. speed = distance ÷ time.
m = F x d. moment = Force x perpendicular distance from pivot.
p = F ÷ a. pressure = Force ÷ area.
p = m x v. momentum = mass x velocity.
mv - mu = F x t. change in momentum = Force x time.
d = m ÷ v. density = mass ÷ volume.
v = f x λ. wave speed = frequency x wavelength.