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3 years ago

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A machine is supplied energy at a rate of 4,000 W and does useful work at a rate of 3,760 W. What is the efficiency of the machi

ne?

2 answers:

Gemiola [76]3 years ago

5 0

Efficiency = (output power) / (input power)

= (3,760 joule/sec) / (4,000 joule/sec)

= 3,760 / 4,000 = 0.94 = 94%

777dan777 [17]3 years ago

5 0

your answer is 94 percent

i just took the test

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