PH-2475
Efficiency
Physics · Secondary 4 · Medium · Efficiency
A cyclist does 300 J of useful work on the bicycle wheels when he supplies 750 J of energy to the pedals. Using the definition of efficiency, what is the efficiency of the bicycle in transmitting energy from the pedals to the wheels?
- 0.20
- 40%
- 60%
- 2.5%
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