23. The Second Law of Thermodynamics
The Carnot Cycle
7:11 minutes
Problem 21d
Textbook Question
Textbook QuestionThe engine that powers a crane burns fuel at a flame temperature of 2000℃. It is cooled by 20℃ air. The crane lifts a 2000 kg steel girder 30 m upward. How much heat energy is transferred to the engine by burning fuel if the engine is 40% as efficient as a Carnot engine?
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