Physics, 02.05.2021 04:40 drainy0uandthefish

A machine used 20 J of energy to make a bicycle start. However, 6 J of energy was
wasted as heat. What is the percentage
efficiency of the machine?
a 30%
b 75%
C 70%
d 60%

Answers: 3

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A machine used 20 J of energy to make a bicycle start. However, 6 J of energy was
wasted as h...