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IP If a heat engine does 2700 J of work with an efficiency
Chapter 18, Problem 50P(choose chapter or problem)
Problem 50P
IP If a heat engine does 2700 J of work with an efficiency of 0.18, find (a) the heat taken in from the hot reservoir and (b) the heat given off to the cold reservoir. (c) If the efficiency of the engine is increased, do your answers to parts (a) and (b) increase decrease, or stay the same? Explain.
Questions & Answers
QUESTION:
Problem 50P
IP If a heat engine does 2700 J of work with an efficiency of 0.18, find (a) the heat taken in from the hot reservoir and (b) the heat given off to the cold reservoir. (c) If the efficiency of the engine is increased, do your answers to parts (a) and (b) increase decrease, or stay the same? Explain.
ANSWER:
Step 1 of 4
Here, we have to calculate the heat in the hot and cold reservoirs of a heat engine and to discuss whether it will change if the efficiency of the system is changed.
The equation for the efficiency of the Carnot engine is,
Where, 
Or, 
Where, 
a)