Physics, 18.03.2021 03:10, Beltrand504

While hammering a nail, you put in 30 Joules of work. The hammer then puts out 10 J of work on the nail. What is that hammer's efficiency?

A. 300%

B. 40%

С. 33%

D. 33 J

Answers: 3

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While hammering a nail, you put in 30 Joules of work. The hammer then puts out 10 J of work on the...