alissiabenner4087
22.07.2021 •
Mathematics
Tim used a lever to lift a heavy box off the ground. His input work was 50 J and the output work was 40 J. What was the mechanical efficiency of the lever?
A.90%
B.30%
C.80%
D.10%
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Ответ:
Explanation: 40 divided by 50 is .80
Equaling 80%
Ответ:
11:8
Step-by-step explanation: