Tutorials in Introductory Physics
1st Edition
ISBN: 9780130970695
Author: Peter S. Shaffer, Lillian C. McDermott
Publisher: Addison Wesley
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Chapter 27.2, Problem 3bTH
To determine
The comparison of absolute work done for the process I and IV.
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Part C
Since the aluminum bar is not an isolated system, the second law of thermodynamics cannot be applied to the bar alone. Rather, it should be applied to the bar in
combination with its surroundings (the lake). Assume that the entropy change of the bar is -1238 J/K. What is the change in total entropy A.Stotal?
Express your answer numerically in joules per Kelvin
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AStotal =
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A cylinder contains 0.250 mol of carbon dioxide (CO₂) gas
at a temperature of 27.0°C. The cylinder is provided with a
frictionless piston, which maintains a constant pressure of
1.00 atm on the gas. The gas is heated until its temperature
increases to 127.0°C. Assume that the CO₂ may be treated
as an ideal gas.
Part A
How much work is done by the gas in this process?
Express your answer in joules.
— ΑΣΦ
W =
Submit
Part B
On what is this work done?
The work is done on the piston.
The work is done on the cylinder.
Submit
Part C
Request Answ
AU =
What is the change in internal energy of the gas?
Express your answer in joules.
ΑΣΦ
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Request Answer
P Pearson
W
?
?
J
J
A 4.0-kg piece of aluminum at 29.4 °C is placed in 1.0 kg of water in a Styrofoam container
at room temperature (20.0 °C).
Part A
Estimate the net change in entropy of the system.
Express your answer to two significant figures and include the appropriate units.
AS =
μA
Value
Units
?
Chapter 27 Solutions
Tutorials in Introductory Physics
Ch. 27.1 - Prob. 1aTHCh. 27.1 - In this process, which of the quantities P, V, n,...Ch. 27.1 - Consider the following incorrect student...Ch. 27.1 - Explain why it is not possible to use the ideal...Ch. 27.1 - A long pin is used to hold the piston in place as...Ch. 27.1 - A long pin is used to hold the piston in place as...Ch. 27.1 - Prob. 2cTHCh. 27.2 - Prob. 1aTHCh. 27.2 - Prob. 1bTHCh. 27.2 - Prob. 1cTH
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- AT = K Ideal-gas processes are often shown on a pV diagram that graphs pressure versus volume. (Figure 1) is the pV diagram for 2.0 mol of a monatomic gas that undergo a process taking them from initial state i to final state f. Submit Request Answer Part B Figure 1 of 1 What is the change in entropy? p (kPa) Express your answer in joules per kelvin. 200- AS = J/K 100- Submit Request Answer 0- 0. V (L) 50 100 150arrow_forwardA 480 kg concrete table needs to be supported at the four corners by compressed-air cylinders. Each cylinder is 20 cm in diameter and has a 1.20 m initial length when the pressure inside is 1.0 atm. A hoist lowers the table very slowly, compressing the cylinders while allowing them to stay in thermal equilibrium with their surroundings. Part A How much work has been done on the gas of the four cylinders when the table reaches its equilibrium position? Express your answer with the appropriate units. HẢ W = 4600 Pa Submit Previous Answers Request Answer X Incorrect; Try Again; 4 attempts remainingarrow_forwardThe power output of a car engine running at 3000 rpm is 400 kW. Part A How much work is done per cycle if the engine's thermal efficiency is 20.0%? Give your answer in kJ. Express your answer in kilojoules.arrow_forward
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