Calculating efficiency (in terms of useful output energy transfer)
Lesson 24 / 41
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I can calculate the efficiency of an energy transfer and describe ways in which energy is dissipated.
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Energy is dissipated due to friction which causes particles to vibrate more quickly and heats up the surroundings.
Energy is dissipated due to drag which causes particles in the surroundings to move more quickly.
Efficiency = useful output energy transfer / total input energy transfer
Efficiency can be increased by lubrication, bearings or wheels
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