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Sedaia [141]
3 years ago
11

An engine exhausts 1140 j of energy for every 3790 j of energy it takes in. what is its efficiency?

Physics
1 answer:
densk [106]3 years ago
6 0
Given:\\ Q_+=3790J\\Q_-=1140J\\\\Find:\\\eta=?\\\\Solution:\\\\\eta=1- \frac{Q_-}{Q_+} \\\\\eta=1- \frac{1140J}{3790J} \approx 0.7
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