2.6

• Efficiency


  The ratio of useful work output to total work input
• Insulation


  A way of reducing dissipation due to conduction, convection, or radiation
• Work done


  The amount of energy transferred when an object is moved
• Work


  When a force causes displacement of an object
• Power


  The rate at which work is done or energy is transferred
• Energy transferred


  When work is done on an object, energy is transferred to the object
• Dissipation


  Loss of energy
• Gravitational potential energy


  The maximum store of energy in a raised object
• Electrical energy transfer


  When there is current flowing
• Power


  The rate at which work is done