Physics · Thermodynamics
A reversible engine takes heat from a reservoir at 527°C and rejects it to a sink at 127°C. The engine is required to perform useful mechanical work at the rate of 750 W. How many calories per second must the engine take from the reservoir? (Take 1 cal = 4.2 J)
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1157.1 cal/sec
- 257.1 cal/sec
- 3257.1 cal/sec
- 4357.1 cal/sec✓
Correct answer
357.1 cal/sec
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