1. A gas undergoes isobaric process with a constant pressure of 2000 Pa. If the heat of800 J is added to the process, the volume expands from 0.120 m to 0.200 m. What isthe change in its internal energy?2. An engine absorbs 500 J of heat and reject 100 J of heat to cold reservoir in eachcycle. What is its efficiency?3. From Question 2, how much work does the engine do in three cycles?4. A refrigerator has a coefficient of performance of 2.0. In each cycle it absorbs 3.4x10J of heat from the cold reservoir. During each cycle, how much heat is released to thehigh-temperature reservoir?5. During running, you lost 4.0x10 J of heat, and your internal energy also decreased by1.6x10* J. How much work did you do in the match?

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1. 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 m' to 0.200 m'. What is the change in its internal energy? 2. An engine absorbs 500 J of heat and reject 100 J of heat to cold reservoir in each cycle. What is its efficiency? 3. From Question 2, how much work does the engine do in three cycles?

1. 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 m' to 0.200 m'. What is the change in its internal energy? 2. An engine absorbs 500 J of heat and reject 100 J of heat to cold reservoir in each cycle. What is its efficiency? 3. From Question 2, how much work does the engine do in three cycles?

Refrigeration and Air Conditioning Technology (MindTap Course List)

8th Edition

ISBN:9781305578296

Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Publisher:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Chapter2: Matter And Energy

Section: Chapter Questions

Problem 30RQ: A gas is compressed inside a compressor's cylinder. When the piston is at its bottom dead center,...

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