physics igcse

• current


  voltage = resistance
• velocity


  resistance x current
• resistance


  voltage ± current
• velocity, distance, time


  velocity = distance / time
• distance


  velocity x time
• acceleration


  (velocity 2 - velocity 1) / time
• work done


  force x distance
• power


  current x voltage
• kinetic energy


  1/2 x mass x velocity^2
• gravitational potential energy


  mass x gravity x height
• charge


  current x time
• pressure


  force / area
• volume


  mass / density
• density


  mass / volume
• efficiency


  useful output / input x 100
• force


  mass x acceleration
• Hooke's law


  force = constant x difference
• weight


  mass x gravity
• acceleration


  total distance / total time^2
• wavelength


  speed / frequency
• frequency


  velocity / wavelength
• electrical power


  energy / time
• electrical energy


  power x time
• power consumption


  power x (+ ÷ 1000)
• When light passes from one material to another it changes direction
• Refractive index (n) = Speed of light in vacuum / Speed of light in material