physics Grade 9 Unit 5 Simple machines. Efficiency
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physics Grade 9 Unit 5 Simple machines. Efficiency
Physics Grade 9 Unit 5 Simple machines Efficiency of simple machine Efficiency describes how good a machine is at transferring the input energy to useful output energy. It can also be defined in terms of power. As power is the energy utilization, efficiency can also be expressed as the ratio of power output to power input. Machines waste energy ...
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