Inquiry into Physics
8th Edition
ISBN: 9781337515863
Author: Ostdiek
Publisher: Cengage
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Textbook Question
Chapter 5, Problem 32P
. The temperature in the deep interiors of some giant molecular clouds in the Milky Way galaxy is 50 K. Compare the amount of energy that would have to be transferred to this environment to the amount that would have to transferred to a room temperature environment to bring about a 1.0 J/K increase in the entropy of the universe in each case.
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The temperature in the deep interiors of some giant molecular clouds in the Milky Way galaxy is 50 K. Compare the amount of energy that would have to be transferred to this environment to the amount that would have to be transferred to a room temperature environment to bring about a 7.7 J/K increase in the entropy of the universe in each case.
ΔEroom temp/ ΔEMilky Way =
On a cold day, 24500 J of heat leaks out of a house. The inside temperature is 21°C, and the outside temperature is -15°C. What is the increase in the entropy of the universe that this heat loss produces?
A system's "entropy" is
(a) the amount of work the system can do.
(b) the amount of microscopic work the system can do.
(c) the amount of force the system could exert.
(d) the amount of thermal energy in the system.
(e) the amount of microscopic disorganization in the system.
Chapter 5 Solutions
Inquiry into Physics
Ch. 5 - Explain why the Moon and Mercury possess only very...Ch. 5 - The dwarf planet Pluto has an average surface...Ch. 5 - Prob. 1AACh. 5 - Prob. 2AACh. 5 - Discuss some of the early developments in the...Ch. 5 - Prob. 2PIPCh. 5 - In Section 5.2, we discussed the phenomenon of...Ch. 5 - Prob. 2MIOCh. 5 - (¦ Indicates a review question, which means it...Ch. 5 - Prob. 2Q
Ch. 5 - Prob. 3QCh. 5 - (¦ Indicates a review question, which means it...Ch. 5 - Indicates a review question, which means it...Ch. 5 - (¦ Indicates a review question, which means it...Ch. 5 - Prob. 7QCh. 5 - (¦ Indicates a review question, which means it...Ch. 5 - Prob. 9QCh. 5 - Prob. 10QCh. 5 - (¦ Indicates a review question, which means it...Ch. 5 - (¦ Indicates a review question, which means it...Ch. 5 - (¦ Indicates a review question, which means it...Ch. 5 - Prob. 14QCh. 5 - (¦ Indicates a review question, which means it...Ch. 5 - (¦ Indicates a review question, which means it...Ch. 5 - (¦ Indicates a review question, which means it...Ch. 5 - Prob. 18QCh. 5 - (¦ Indicates a review question, which means it...Ch. 5 - (¦ Indicates a review question, which means it...Ch. 5 - Prob. 21QCh. 5 - Prob. 22QCh. 5 - Prob. 23QCh. 5 - Prob. 24QCh. 5 - Prob. 25QCh. 5 - Prob. 26QCh. 5 - Prob. 27QCh. 5 - Prob. 28QCh. 5 - (¦ Indicates a review question, which means it...Ch. 5 - (¦ Indicates a review question, which means it...Ch. 5 - Prob. 31QCh. 5 - Prob. 32QCh. 5 - Prob. 33QCh. 5 - Prob. 34QCh. 5 - Prob. 35QCh. 5 - Prob. 36QCh. 5 - Prob. 37QCh. 5 - Prob. 38QCh. 5 - Prob. 39QCh. 5 - (¦ Indicates a review question, which means it...Ch. 5 - Prob. 41QCh. 5 - Prob. 42QCh. 5 - Prob. 43QCh. 5 - Prob. 44QCh. 5 - Prob. 45QCh. 5 - Prob. 46QCh. 5 - Prob. 1PCh. 5 - On a nice winter day at the South Pole, the...Ch. 5 - An iron railroad rail is 700 ft long when the...Ch. 5 - A copper vat is 10 m long at room temperature...Ch. 5 - A machinist wishes to insert a steel rod with a...Ch. 5 - An aluminum wing on a passenger is 30 m long when...Ch. 5 - A fixed amount of a particular ideal gas at 16C°...Ch. 5 - em>. The volume of an ideal gas enclosed in a...Ch. 5 - A gas is compressed inside a cylinder (Figure...Ch. 5 - Prob. 10PCh. 5 - . How much heat is needed to raise the temperature...Ch. 5 - Prob. 12PCh. 5 - - (a) Compute the amount of heat needed to raise...Ch. 5 - Prob. 14PCh. 5 - . A 1,200-kg car going 25 m/s is brought to a stop...Ch. 5 - Prob. 16PCh. 5 - Prob. 17PCh. 5 - Prob. 18PCh. 5 - . On a winter day, the air temperature is — 15°C,...Ch. 5 - . On a summer day in Houston, the temperature is...Ch. 5 - . Inside a building, the temperature is 20°C, and...Ch. 5 - . On a hot summer day in Washington, D.C., the...Ch. 5 - . An apartment has the dimensions 10 in 1w 5 in 3...Ch. 5 - Prob. 24PCh. 5 - . The temperature of the air in thermals decreases...Ch. 5 - In cold weather, you can sometimes "see" your...Ch. 5 - . What is the Carnot efficiency of a heat engine...Ch. 5 - . What is the maximum efficiency that a hear...Ch. 5 - . As a gasoline engine is miming, an amount of...Ch. 5 - . A proposed ocean thermal-energy conversion...Ch. 5 - . An irreversible process takes place by which the...Ch. 5 - . The temperature in the deep interiors of some...Ch. 5 - Prob. 1CCh. 5 - Pyrex g1assware is noted for its ability to...Ch. 5 - Prob. 3CCh. 5 - As air rises in the atmosphere, its temperature...Ch. 5 - . 5. If air at 35°C and 77 percent relative...Ch. 5 - Prob. 6C
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- A copper rod of cross-sectional area 5.0 cm2 and length 5.0 m conducts heat from a heat reservoir at 373 K to one at 273 K. What is the time rate of change of the universe's entropy for this process?arrow_forwardAssume a sample of an ideal gas is at room temperature. What action will necessarily make the entropy of the sample increase? (a) Transfer energy into it by heat, (b) Transfer energy into it irreversibly by heat, (c) Do work on it. (d) Increase either its temperature or its volume, without letting the other variable decrease, (e) None of those choices is correct.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_forward
- (a) On a winter day, a certain house loses 5.00108J of heat to the outside (about 500,000 Btu). What is the total change in entropy due to this heat transfer alone, assuming an average indoor temperature of 21.0C and an average outdoor temperature of 5.00C ? (b) This large change in entropy implies a large amount of energy has become unavailable to do work. Where do we find more energy when such energy is lost to us?arrow_forward(a) What is the change in entropy if you start with 100 coins in the 45 heads and 55 tails macrostate, toss them, and get 51 heads and 49 tails? (b) What if you get 75 heads and 25 tails? (c) How much more likely is 51 heads and 49 tails than 75 heads and 25 tails? (d) Dues either outcome violate the second law of thermodynamics?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
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