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a student does 100 j of work on the handle of a bicycle pump. the pump does 40 j of work pushing the air into the tire. what is the efficiency of the pump? show your work.
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a student does 100 j of work on the handle of a bicycle pump. the pump does 40 j of work pushing the air into the tire. what is the efficiency of the pump? show your work.

User Johannes Riecken
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2 Answers

5 votes
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User Balezz
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5.3k points
5 votes

Answer:

40%

Step-by-step explanation:

Student -> Pump = 100j

Pump -> Tire = 40j

Between the two, 60j of energy were lost.

Efficiency = 40/100 = 40%

User BlueMoon
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5.5k points
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