Physics Formulae 3.0 / 5 based on 1 rating ? PhysicsEquations and FormulaeIGCSEEdexcel Created by: ElleCreated on: 13-03-13 10:01 Electrical Power Electrical Power = current x voltage P = I x V 1 of 17 Voltage Voltage = current x resistance V = I x R 2 of 17 Charge Charge = current x resistance Q = I x T 3 of 17 Average Speed Average Speed = distance moved / time taken s = d/t 4 of 17 Force Force = mass x acceleration f = m x a 5 of 17 Pressure Pressure = force/area P = f/a 6 of 17 Moment Moment = force x perpendicular distance from pivot 7 of 17 Wave Speed Wave Speed = frequency x wavelength 8 of 17 Refractive Index Refractive Index = sin(i) / sin(r) 9 of 17 Critical Angle sin(critical angle) = 1/refractive index 10 of 17 Energy Transfer Energy Transfer = work done 11 of 17 Work Done Work Done = force x distance moved in direction of force W = F x D 12 of 17 Efficiency Efficiency = useful energy output/total energy input 13 of 17 Efficiency Efficiency = useful energy output/total energy input 14 of 17 Density Density = mass/volume 15 of 17 Gravitational Potential Energy (GPE) Gravitational Potential Energy = mass x g x height GPE = m x g x h 16 of 17 Kinetic Energy Kinetic Energy = 1/2 x mass x speed(squared) KE = 1/2 x m x v(squared) 17 of 17
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