A gas undergoes isobaric process with a constant pressure of 2000 Pa. If the heat of 800 J is added to the process, the volume expands from 0.120 m3 to 0.200 m3. What is the change in its internal energy?An engine absorbs 500 J of heat and reject 100 J of heat to cold reservoir in each cycle. What is its efficiency? From Question 2, how much work does the engine do in three cycles?A refrigerator has a coefficient of performance of 2.0. In each cycle it absorbs 3.4×104 J of heat from the cold reservoir. During each cycle, how much heat is released to the high-temperature reservoir?During running, you lost 4.0×104 J of heat, and your internal energy also decreased by 1.6×105 J. How much work did you do in the match?

Work done 8n isobaric process W=pΔV

Answered: gas undergoes isobaric process with a…

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter18: Heat Engines, Entropy, And The Second Law Of Thermodynamics

Section: Chapter Questions

Problem 63P: A 1.00-mol sample of an ideal monatomic gas is taken through the cycle shown in Figure P18.63. The...

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A gas undergoes isobaric process with a constant pressure of 2000 Pa. If the heat of 800 J is added to the process, the volume expands from 0.120 m3 to 0.200 m3. What is the change in its internal energy?
An engine absorbs 500 J of heat and reject 100 J of heat to cold reservoir in each cycle. What is its efficiency?
From Question 2, how much work does the engine do in three cycles?
A refrigerator has a coefficient of performance of 2.0. In each cycle it absorbs 3.4×104 J of heat from the cold reservoir. During each cycle, how much heat is released to the high-temperature reservoir?
During running, you lost 4.0×104 J of heat, and your internal energy also decreased by 1.6×105 J. How much work did you do in the match?

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