Physics

• 1 x 10^0 m

  1 meter
• 1 x 10^1 m

  10 meters
• 1 x 10^2 m

  100 meters
• 1 x 10^3 m

  1000 meters
• 1 x 10^4 m

  10,000 meters
• what is the fastest thing in the universe? the speed of light
• how long does it take sunlight to reach the earth? 8 minutes
• 1 light year is equal to

  10^16
• 1 x 10^-1 m

  10 centimetres
• 1 x 10^-2 m

  1 centimetre
• 1 x 10^-3 m

  1 millimetre
• Wave speed equation

  v = fxλ
• rearrange the equation for wave speed to find f (V=Fλ): F = V ÷ λ
• rearrange the equation for wave speed to find λ (V=Fλ): λ = V ÷ F
• Time period equation

  T = I ÷ F
• Rearrange the time period equation to find F (T = I ÷ F): F = T ÷ I
• Refractive index equation

  N = C ÷ V
• critical angle equation


  sin c = 1 ÷ n
• inverse square law equation

  I1÷I2=D2^2÷D1^2
• V =

  velocity (m/s)
• λ =

  wavelength (m)
• F =

  frequency (Hz)
• T =

  tension/force (N)
• μ =

  mass per meter (kg/m)
• T =

  time (s)
• c =

  light of speed in a vaccum (m/s)
• n =

  refractive index
• i =

  angle of incidence (°)
• r =

  angle of refraction (°)
• C =

  critical angle (°)
• I =

  intensity (W/M^2)
• k =

  constant [power] (W)
• r/D =

  Distance (M)
• Tera (T)

  10^12
• Giga (G)

  10^9
• Mega (M)

  10^6
• Kilo (K)

  10^3
• Milli (m)

  10^-3
• Micro (μ)

  10^-6
• nano (n)

  10^-9