EBK PHYSICS
5th Edition
ISBN: 8220103026918
Author: Walker
Publisher: PEARSON
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Textbook Question
Chapter 18, Problem 82GP
Entropy and the Sun The surface of the Sun has a temperature of 5500 °C and the temperature of deep space is 3.0 K. (a) Find the entropy increase produced by the Sun in one day, given that it
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Chapter 18 Solutions
EBK PHYSICS
Ch. 18.1 - System 1 is at 0 C and system 2 is at 0 F. If...Ch. 18.2 - Enhance Your Understanding (Answers given at the...Ch. 18.3 - Enhance Your Understanding (Answers given at the...Ch. 18.4 - Enhance Your Understanding (Answers given at the...Ch. 18.5 - Enhance Your Understanding (Answers given at the...Ch. 18.6 - Enhance Your Understanding (Answers given at the...Ch. 18.7 - Enhance Your Understanding (Answers given at the...Ch. 18.8 - Enhance Your Understanding (Answers given at the...Ch. 18.9 - Enhance Your Understanding (Answers given at the...Ch. 18.10 - Enhance Your Understanding (Answer given at the...
Ch. 18 - Prob. 1CQCh. 18 - Heat is added to a substance. Is it safe to...Ch. 18 - Are there thermodynamic processes in which all the...Ch. 18 - An ideal gas is held in an insulated container at...Ch. 18 - Prob. 5CQCh. 18 - Which law of thermodynamics would be violated if...Ch. 18 - Heat engines always give off a certain amount of...Ch. 18 - Prob. 8CQCh. 18 - Which law of thermodynamics is most pertinent to...Ch. 18 - Which has more entropy: (a) popcorn kernels, or...Ch. 18 - Prob. 1PCECh. 18 - A gas expands, doing 100 J of work. How much heat...Ch. 18 - A swimmer does 7.7 105 J of work and gives off...Ch. 18 - When 1310 J of heat are added to one mole of an...Ch. 18 - Three different processes act on a system. (a) In...Ch. 18 - A container holds a gas consisting of 2.85 moles...Ch. 18 - The Charge on Adhesive Tape When adhesive tape is...Ch. 18 - Predict/Calculate One mole of an ideal monatomic...Ch. 18 - Prob. 9PCECh. 18 - A cylinder contains 4.0 moles of a monatomic gas...Ch. 18 - An ideal gas is taken through the three processes...Ch. 18 - Figure 18-26 shows three different multistep...Ch. 18 - Prob. 13PCECh. 18 - An ideal gas is compressed at constant pressure to...Ch. 18 - As an ideal gas expands at constant pressure from...Ch. 18 - A system consisting of an ideal gas at the...Ch. 18 - Prob. 17PCECh. 18 - (a) Find the work done by a monatomic ideal gas as...Ch. 18 - Prob. 19PCECh. 18 - Predict/Calculate If 9.50 moles of a monatomic...Ch. 18 - Suppose 118 moles of a monatomic ideal gas undergo...Ch. 18 - A weather balloon contains an ideal gas and has a...Ch. 18 - Prob. 23PCECh. 18 - During an adiabatic process, the temperature of...Ch. 18 - An ideal gas follows the three-part process shown...Ch. 18 - With the pressure held constant at 260 kPa, 43 mol...Ch. 18 - Prob. 27PCECh. 18 - A system expands by 0.75 m3 at a constant pressure...Ch. 18 - Prob. 29PCECh. 18 - A certain amount of a monatomic ideal gas...Ch. 18 - An ideal gas doubles its volume in one of three...Ch. 18 - Predict/Explain You plan to add a certain amount...Ch. 18 - Find the amount of heat needed to increase the...Ch. 18 - (a) If 585 J of heat are added to 49 moles of a...Ch. 18 - A system consists of 3.5 mol of an ideal monatomic...Ch. 18 - Find the change in temperature if 170 J of heat...Ch. 18 - Gasoline Ignition Consider a short time span just...Ch. 18 - Prob. 38PCECh. 18 - Prob. 39PCECh. 18 - A monatomic ideal gas is held in a thermally...Ch. 18 - Consider the expansion of 60.0 moles of a...Ch. 18 - A Carnot engine can be operated with one of the...Ch. 18 - What is the efficiency of an engine that exhausts...Ch. 18 - An engine receives 660 J of heat from a hot...Ch. 18 - A Carnot engine operates between the temperatures...Ch. 18 - A nuclear power plant has a reactor that produces...Ch. 18 - At a coal-burning power plant a steam turbine is...Ch. 18 - Predict/Calculate A portable generator produces...Ch. 18 - Predict/Calculate The efficiency of a particular...Ch. 18 - During each cycle a reversible engine absorbs 3100...Ch. 18 - Prob. 51PCECh. 18 - The operating temperatures for a Carnot engine are...Ch. 18 - A certain Carnot engine takes in the heat Qh and...Ch. 18 - Predict/Explain (a) If the temperature in the...Ch. 18 - The refrigerator in your kitchen does 490 J of...Ch. 18 - A refrigerator with a coefficient of performance...Ch. 18 - Prob. 57PCECh. 18 - Prob. 58PCECh. 18 - An air conditioner is used to keep the interior of...Ch. 18 - A reversible refrigerator has a coefficient of...Ch. 18 - A freezer has a coefficient of performance equal...Ch. 18 - Predict/Explain (a) If you rub your hands...Ch. 18 - Predict/Explain (a) An ideal gas is expanded...Ch. 18 - Predict/Explain (a) A gas is expanded reversibly...Ch. 18 - Find the change in entropy when 1.85 kg of water...Ch. 18 - Determine the change in entropy that occurs when...Ch. 18 - Prob. 67PCECh. 18 - On a cold winters day heat leaks slowly out of a...Ch. 18 - An 88-kg parachutist descends through a vertical...Ch. 18 - Predict/Calculate Consider the air-conditioning...Ch. 18 - A heat engine operates between a high-temperature...Ch. 18 - It can be shown that as a mass m with specific...Ch. 18 - Prob. 73GPCh. 18 - Figure 18-34 Problem 74 74 CE An ideal gas has...Ch. 18 - The heat that goes into a particular Carnot engine...Ch. 18 - Predict/Calculate Consider 132 moles of a...Ch. 18 - Prob. 77GPCh. 18 - Prob. 78GPCh. 18 - Predict/Calculate Engine A has an efficiency of...Ch. 18 - Nuclear Versus Natural Gas Energy Because of...Ch. 18 - A freezer with a coefficient of performance of...Ch. 18 - Entropy and the Sun The surface of the Sun has a...Ch. 18 - Prob. 83GPCh. 18 - A cylinder with a movable piston holds 2.95 mol of...Ch. 18 - Making Ice You place 0.410 kg of cold water inside...Ch. 18 - An inventor claims a new cyclic engine that uses...Ch. 18 - Predict/Calculate A small dish containing 530 g of...Ch. 18 - Predict/Calculate An ideal gas is taken through...Ch. 18 - One mole of an ideal monatomic gas follows the...Ch. 18 - When a heat Q is added to a monatomic ideal gas at...Ch. 18 - The Carnot Cycle Figure 18-36 shows an example of...Ch. 18 - A Carnot engine and a Carnot refrigerator operate...Ch. 18 - Prob. 93PPCh. 18 - Energy from the Ocean Whenever two objects are at...Ch. 18 - Prob. 95PPCh. 18 - Energy from me Ocean Whenever two objects are at...Ch. 18 - Predict/Calculate Referring to Example 18-21...Ch. 18 - Predict/Calculate Referring to Example 18-21...
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- A sealed container holding 0.500 kg of liquid nitrogen at its boiling point of 77.3 K is placed in a large room at 21.0C. Energy is transferred from the room to the nitrogen as the liquid nitrogen boils into a gas and then warms to the rooms temperature. (a) Assuming the rooms temperature remains essentially unchanged at 21.0C, calculate the energy transferred from the room to the nitrogen. (b) Estimate the change in entropy of the room. Liquid nitrogen has a latent heat of vaporization of 2.01 105 J/kg. The specific heat of N2 gas at constant pressure is CN2 = 1.04 103J/kg K.arrow_forwardGive an example of a spontaneous process in which a system becomes less ordered and energy becomes less available to do work. What happens to the system's entropy in this process?arrow_forward(a) Ten grams of H2O stats as ice at 0 . The ice absorbs heat from the air (just above 0 ) until all of it melts. Calculate the entropy change of the H2O, of the air, and of the universe. (b) Suppose that the air in part (a) is at 20 rather than 0 and that the ice absorbs heat until it becomes water at 20 . Calculate the entropy change of the H2O, of the air, and of the universe. (c) Is either of these processes reversible?arrow_forward
- Which of the following is true for the entropy change of a system that undergoes a reversible, adiabatic process? (a) S 0 (b) S = 0 (c) S 0arrow_forwardAn ice tray contains 500 g of liquid water at 0C. Calculate the change in entropy of the water as it freezes slowly and completely at 0C.arrow_forwardTrue or False: The entropy change in an adiabatic process must be zero because Q = 0.arrow_forward
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- In a very mild winter climate, a heat pump has heat transfer from an environment at 5.00C to one at 35.0C. What is the best possible coefficient of performance for these temperatures? Explicitly show how you follow the steps in the Problem-Solving Strategies for Thermodynamics.arrow_forwardAn ideal gas is taken from an initial temperature Ti to a higher final temperature Tf along two different reversible paths. Path A is at constant pressure, and path B is at constant volume. What is the relation between the entropy changes of the gas for these paths? (a) SA SB (b) SA = SB (c) SA SBarrow_forwardA 65-g ice cube is initially at 0.0C. (a) Find the change in entropy of the cube after it melts completely at 0.0C. (b) What is the change in entropy of the environment in this process? Hint: The latent heat of fusion for water is 3.33 105 J/kg.arrow_forward
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