Additional support material

Notes
  • formula triangle
    power= current × voltage
    P= IV
     
  • formula triangle
    energy transferred = current × voltage × time
    E= IVt
     

Properties of waves, including light and sound


  • formula triangle
    velocity= frequency × wavelength
    v= fλ
     
  • formula triangle
    frequency=  1 
     period 
    f=  1 
     T 
     
  • formula triangle
    refractive index = sine of angle of incidence, i 
    sine of angle of refraction, r 
    n=  sin i 
     sin r 
     
  • formula triangle
    refractive index =  speed of light in vacuum 
     speed of light in material 
    n=  cv 
     cm 
     
 
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