University Physics Volume 2
18th Edition
ISBN: 9781938168161
Author: OpenStax
Publisher: OpenStax
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Chapter 4, Problem 71AP
A system consisting of 20.0 mol of a monoatomic ideal gas is cooled at constant pressure from a volume of 50.0 L to 10.0 L. The initial temperature was 300 K. What is the change in entropy of the gas?
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Chapter 4 Solutions
University Physics Volume 2
Ch. 4 - Check Your Understanding What is the efficiency of...Ch. 4 - Check your Understanding Show that QhQh=QcQc for...Ch. 4 - Check Your Understanding A Carnot engine operates...Ch. 4 - Check Your Understanding A Carnot refrigerator...Ch. 4 - Check Your Understanding In Example 4.7, the...Ch. 4 - Check Your Understanding A quantity of heat Q is...Ch. 4 - Check Your Understanding A 50-g copper piece at a...Ch. 4 - State an example of a process that occurs in...Ch. 4 - Explain in practical terms why efficiency is...Ch. 4 - If the refrigerator door is left what happens to...
Ch. 4 - Is it possible for the efficiency of a reversible...Ch. 4 - In the text, we showed that if the Clausius...Ch. 4 - Why don't we operate ocean liners by extracting...Ch. 4 - Discuss the practical advantages and disadvantages...Ch. 4 - The energy output of a heat pump is greater than...Ch. 4 - Speculate as to why nuclear power plants are less...Ch. 4 - An ideal gas goes from state (pi,vi,) to state...Ch. 4 - To increase the efficiency of a Carnot engine,...Ch. 4 - How could you design a Carnot engine with 100%...Ch. 4 - What type of processes occur in a Carnot cycle?Ch. 4 - Does the entropy increase for a Carnot engine for...Ch. 4 - Is it possible for a system to have an entropy...Ch. 4 - Are the entropy changes of the system in the...Ch. 4 - Discuss the entropy changes in the systems of...Ch. 4 - A tank contains 111.0 g chlorine gas l2), which is...Ch. 4 - A mole of ideal monatomic gas at 0 and 1.00 atm...Ch. 4 - A mole of an ideal gas at pressure 4.00 atm and...Ch. 4 - After a free expansion to quadruple its volume, a...Ch. 4 - An engine is found to have an efficiency of 0.40....Ch. 4 - In performing 100.0 J of work, an engine...Ch. 4 - An engine with an efficiency of 0.30 absorbs 500 J...Ch. 4 - It is found that an engine discharges 100.0 J...Ch. 4 - The temperature of the cold reservoir of the...Ch. 4 - An engine absorbs three times as much heat as it...Ch. 4 - A coal power plant consumes 100,000 kg of coal per...Ch. 4 - A refrigerator has a coefficient of performance of...Ch. 4 - During one cycle, a refrigerator removes 500 J...Ch. 4 - If a refrigerator discards 80 J of heat per cycle...Ch. 4 - A refrigerator has a coefficient of performance of...Ch. 4 - The temperature of the cold and hot reservoirs...Ch. 4 - Suppose a Carnot refrigerator operates between Tc...Ch. 4 - A Carnot engine operates between reservoirs at 600...Ch. 4 - A 500-W motor operates a Carnot refrigerator...Ch. 4 - Sketch a Carnot cycle on a temperature-volume...Ch. 4 - A Carnot heat pump operates between 0 and 20 ....Ch. 4 - An engine between heat reservoirs at 20 and 200 ...Ch. 4 - Suppose a Carnot engine can be operated between...Ch. 4 - A Carnot engine is used to measure the temperature...Ch. 4 - What is the minimum work required of a...Ch. 4 - Two hundred joules of heat are removed from a heat...Ch. 4 - In an isothermal reversible expansion at 27 , an...Ch. 4 - An ideal gas at 300 K is compressed isothermally...Ch. 4 - What is the entropy change of 10 g of steam at 100...Ch. 4 - A metal is used to conduct heat between two...Ch. 4 - For the Carnot cycle of Figure 4.12, what is the...Ch. 4 - A 5.0-kg piece of lead at a temperature of 600 is...Ch. 4 - One mole of an ideal gas doubles its volume in a...Ch. 4 - One mole of an ideal monatomic gas is confined to...Ch. 4 - (a) A 5.0-kg rock at a temperature of 20 is...Ch. 4 - A copper rod of cross-sectional area 5.0 cm2 and...Ch. 4 - Fifty grams of water at 20 is heated until it...Ch. 4 - Fifty grams of water at 0 are changed into vapor...Ch. 4 - In an isochoric process, heat is added to 10 mol...Ch. 4 - Two hundred grams of water at 0 is brought into...Ch. 4 - Suppose that the temperature of the water in the...Ch. 4 - Two hundred grams of water at 0 is brought into...Ch. 4 - (a) Ten grams of H2O stats as ice at 0 . 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This cycle...Ch. 4 - Consider an ideal gas Joule cycle, also called the...Ch. 4 - Derive a formula for the coefficient of...Ch. 4 - Two moles of nitrogen gas, with =7/5 for ideal...Ch. 4 - A Carnot refrigerator, working between 0 and 30 ...
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