Equations

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  • Created by: Yadna
  • Created on: 28-03-16 13:21
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  • Equations
    • Wave Properties and Sound
      • wave speed = frequency x wavelength
        • v=f?
      • frequency = 1 / time
        • f=1/t
    • Describing Motion
      • average speed = distance travelled / time taken
        • s=d/t
      • acceleration = change in velocity / time taken
        • a=(v-u)/t
    • Behaviour and Uses of Light
      • refractive index of substance = speed of light in air / speed of light in substance
      • refractive index = sine of angle of incidence / sine of angle of refraction
        • n=sin i/sin r
      • sine of critical angle = 1 / refractive index
        • sin c=1/n
    • How Forces Affect Motion
      • force = mass x acceleration
        • f=ma
      • weight = mass x gravitational field strength
        • w=mg
    • Simple Electric Circuits
      • charge = current x time
        • q=it
      • energy transferred = potential difference x charge
        • e=vq
      • resistance = potential difference / current
        • r=v/i

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