Multiple Choice
An engine delivers 40.0 J of work while it takes in energy from a 400 K thermal source. If the engine discharges energy into a thermal reservoir at 200 K, then what is the least amount of heat needed to run the engine?
A) 55.0 J
B) 65.0 J
C) 80.0 J
D) 110 J
Correct Answer:
Verified
Correct Answer:
Verified
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