Physics P7 (2)

  • Created by: aleena147
  • Created on: 21-12-19 20:36


most energy transferes involves some losses often by heating

important priciple is= energy is only useful when it is transferred from one store to a useful store

some input energy is always lost or wasted  for example a motor will transfer energy to the kientic store but it will aslo transfer energy to the thermal stores of the motor and surroundings (wasted)


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