4.5. Heat Engines
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Question 1 of 5
A heat engine receives 7000 J of heat and loses 3000 J in each cycle. What is the efficiency?Correct
Question 2 of 5
Is it possible to transfer heat from a hot reservoir to a cold reservoir?Correct
Question 3 of 5
Is it possible to transfer heat from a cold reservoir to a hot reservoir?Correct
Question 4 of 5
A gas is taken through the cycle illustrated here. During one cycle, how much work is done by an engine operating on this cycle?Correct
Question 5 of 5
The efficiency of a heat engine is defined as the ratio ofCorrect