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stellarik [79]
3 years ago
15

Using a pulley system, a crew does 7,500 J of work to load a box that requires 4,500 J of work. What is the efficiency of the pu

lley system?
Mathematics
1 answer:
miskamm [114]3 years ago
6 0

Answer:

3,000

Step-by-step explanation:

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