Equations

• Give the equation for specific heat capacity

  Energy= mass x specific heat capacity x temperature change
• Give the equation for kinetic energy

  Ek= 0.5 x mass x velocity^2
• Give the equation for elastic potential energy

  Ee= 0.5 x k x e^2
• Give the equation for gravitational potential energy

  Ep= m x g x h
• State ohms law, give the units

  Potential difference(V)= Current(A) x Resistance(ohms)
• Give the equation for efficiency. How might efficiency be expressed?

  Efficiency = useful energy / total energy input. Efficiency can be expressed as a percentage or a decimal value.
• State the equation for calculating electrical charge

  Charge= current x time
• Give the equation for energy

  Energy= Power x time
• Give the equation for density

  Density= mass/volume
• Give the equations for power

  Power= potential difference x current

  Power= current2 x resistance