University Physics Volume 2
18th Edition
ISBN: 9781938168161
Author: OpenStax
Publisher: OpenStax
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Chapter 3, Problem 50P
The state of 30 moles of steam in a cylinder is changed in a cyclic manner from a-b-c-a, where the pressure and volume of the states are: a (30 atm, 20 L), b (50 atm, 20 L), and c (50 atm, 45 L). Assume each change takes place along the line connecting the initial and final states in the pV plane. (a) Display the cycle in the pV plane. (b) Find the net work done by the steam in one cycle. (c) Find the net amount of heat flow in the steam over the course of one cycle.
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Students have asked these similar questions
A closed thermodynamic cycle described by an ellipse is shown on the PV diagram on the right. The maximum pressure of the system is 8.0 x 105 Pa, and the minimum pressure of the system is 4.0 x 10^5 Pa. The maximum volume of the system is 4.0 x 10^-3 m^3 and the minimum volume of the system is 2.0 x 10^-3 m^3 .
a) Calculate the magnitude of the total work done by the system in one full cycle.
b) Does this thermodynamic cycle describe what happens in an ENGINE or a REFRIDGERATOR/HEAT-PUMP?
Consider the processes shown below for a monatomic ideal gas.
Find the work done in each of the processes AB, BC, AD, and DC.
Hint for (a)
WAB=WAB=CorrectJJWBC=WBC=CorrectJJWAD=WAD=IncorrectJJWDC=WDC=CorrectJJ
Find the change in the internal energy in processes AB and BC.
Hint for (b)
ΔEAB=ΔEAB=CorrectJJΔEBC=ΔEBC=CorrectJJ
Find the total heat added in ABC and ADC processes.
Hint for (c)
QABC=QABC=CorrectJJQADC=QADC=CorrectJ
An ideal gas goes around the cycle shown in the triangle shaped PV diagram, A-C-B-A. The pressure changes between P1 and 4P1,
and the volume changes between V, and 3V1 as shown.
What is the total work done by the gas during the process from point C to point B?
4P,
Pi
A
V1
3V1
+3P,V1
- 3P1V1
+5P1V1
- 5P1V1
No work is done
Chapter 3 Solutions
University Physics Volume 2
Ch. 3 - The paths ABC, AC, and ADC represent three...Ch. 3 - Check Your Understanding The quantities below...Ch. 3 - Check Your Understanding Why was it necessary to...Ch. 3 - Check Your Understanding When 1.00 g of ammonia...Ch. 3 - Consider these scenarios and state whether work is...Ch. 3 - Is it possible to determine whether a change in...Ch. 3 - When a liquid is vaporized, its change in internal...Ch. 3 - Why does a bicycle pump feel warm as you inflate...Ch. 3 - Is it possible for the temperature of a system to...Ch. 3 - What does the first law of thermodynamics tell us...
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