Physics equations

All the equations you need to know for iGCSE double award physics. You have to memorise them all.

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  • Created by: CoolKid
  • Created on: 04-04-13 09:31
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  • Physics Equations
    • Forces and motion
      • moment = F x d
        • Force x distance
      • S = d / t
        • Speed = distance / time
      • W = m x g
        • Weight = mass x gravity
      • F = m x a
        • Force = mass x acceleration
      • orbital speed = ( 2?r ) / period of orbit
    • Energy
      • PE = m x g x h
        • Potential energy (J) = mass x gravity x height
      • KE = 0.5mv(2)
        • Kinetic energy = 0.5 mass x velocity (squared)
      • Efficiency = useful work / total energy
      • Power = work / time
        • power in watts (W)
      • Work = F x d
        • Force x distance. Work in Watts, force Newtons, distance metres
    • Electricity
      • Q = I x T
        • coulomb (C), current x time
      • E = I x T x V
        • Energy Joules.
      • P = I x V
        • power in Watts
      • V = I x R
        • Volts = current (amps) x resistance (ohms)
    • Waves
      • n = sin i / sin r
        • Refractive index = incident angle / refracted angle
      • F = 1 / period
        • period time of one wave
      • sin c = 1 / n
        • critical angle, n refractive index
    • Solids, liquids and gases
      • P = h x ? x g
        • Pressure (N/m (2)) = height, density, gravity
      • P = F / A
        • A area
      • ? = m / v
        • ? density, kg/m (2)

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