UNIVERSITY PHYSICS, VOL.2 (OER)16th EditionOpenStax Publisher: XANEDU CISBN: 2810022325764
UNIVERSITY PHYSICS, VOL.2 (OER)
Solutions for UNIVERSITY PHYSICS,VOL.2 (OER)
Problem 4.1CYU:
Check Your Understanding What is the efficiency of a perfect heat engine? What is the coefficient of...Problem 4.2CYU:
Check your Understanding Show that QhQh=QcQc for the hypothetical engine of Figure 4.10 The second...Problem 4.3CYU:
Check Your Understanding A Carnot engine operates between reservoirs at 400 and 30 . (a) What is...Problem 4.4CYU:
Check Your Understanding A Carnot refrigerator operates between two heat reservoirs whose...Problem 4.5CYU:
Check Your Understanding In Example 4.7, the spontaneous flow of heat from a hot object to a cold...Problem 4.6CYU:
Check Your Understanding A quantity of heat Q is absorbed from a reservoir at a temperature Th by a...Problem 4.7CYU:
Check Your Understanding A 50-g copper piece at a temperature of 20 is placed into a large...Problem 1CQ:
State an example of a process that occurs in nature that is as close to reversible as it can be.Problem 4CQ:
Is it possible for the efficiency of a reversible engine to greater than 1.0? Is it possible for the...Problem 5CQ:
In the text, we showed that if the Clausius statement is false, the Kelvin statement must also be...Problem 6CQ:
Why don't we operate ocean liners by extracting heat from the ocean or operate airplanes by...Problem 8CQ:
The energy output of a heat pump is greater than the energy used to operate the pump. Why doesn't...Problem 9CQ:
Speculate as to why nuclear power plants are less efficient than fossil-fuel plants based on...Problem 10CQ:
An ideal gas goes from state (pi,vi,) to state (pf,vf,) when it is allowed to expand freely. Is it...Problem 11CQ:
To increase the efficiency of a Carnot engine, should the temperature of the hot reservoir be raised...Problem 13CQ:
What type of processes occur in a Carnot cycle?Problem 15CQ:
Is it possible for a system to have an entropy change if it neither absorbs nor emits heat during a...Problem 16CQ:
Are the entropy changes of the system in the following processes positive or negative? (a) water...Problem 18P:
A tank contains 111.0 g chlorine gas l2), which is at temperature 82.0 and absolute pressure...Problem 19P:
A mole of ideal monatomic gas at 0 and 1.00 atm is warmed up to expand isobarically to triple its...Problem 20P:
A mole of an ideal gas at pressure 4.00 atm and temperature 298 K expands isothermally to double its...Problem 21P:
After a free expansion to quadruple its volume, a mole of ideal diatomic gas is compressed back to...Problem 22P:
An engine is found to have an efficiency of 0.40. If it does 200 J of work per cycle, what are the...Problem 23P:
In performing 100.0 J of work, an engine discharges 50.0 J of heat. What is the efficiency of the...Problem 24P:
An engine with an efficiency of 0.30 absorbs 500 J of heat per cycle. (a) How much work does it...Problem 25P:
It is found that an engine discharges 100.0 J while absorbing 125.0 J each cycle of operation. (a)...Problem 26P:
The temperature of the cold reservoir of the engine is 300 K. It has an efficiency of 0.30 and...Problem 27P:
An engine absorbs three times as much heat as it discharges. The work done by the engine per cycle...Problem 28P:
A coal power plant consumes 100,000 kg of coal per hour and produces 500 MW of power. If the heat of...Problem 29P:
A refrigerator has a coefficient of performance of 3.0. (a) If it requires 200 J of work per cycle,...Problem 30P:
During one cycle, a refrigerator removes 500 J from a cold reservoir and discharges 800 J to its hot...Problem 31P:
If a refrigerator discards 80 J of heat per cycle and its coefficient of performance is 6.0, what...Problem 32P:
A refrigerator has a coefficient of performance of 3.0. (a) If it requires 200 J of work per cycle,...Problem 33P:
The temperature of the cold and hot reservoirs between which a Carnot refrigerator operates are 73 ...Problem 34P:
Suppose a Carnot refrigerator operates between Tc and Th . Calculate the amount of work required to...Problem 35P:
A Carnot engine operates between reservoirs at 600 and 300 K. If the engine absorbs 100 J per cycle...Problem 36P:
A 500-W motor operates a Carnot refrigerator between 5 and 30 . (a) What is the amount of heat per...Problem 38P:
A Carnot heat pump operates between 0 and 20 . How much heat is exhausted into the interior of a...Problem 39P:
An engine between heat reservoirs at 20 and 200 extracts 1000 J per cycle from the hot reservoir....Problem 40P:
Suppose a Carnot engine can be operated between two reservoirs as either a heat engine or a...Problem 41P:
A Carnot engine is used to measure the temperature of a heat reservoir. The engine operates between...Problem 42P:
What is the minimum work required of a refrigerator if it is to extract 50 J per cycle from the...Problem 43P:
Two hundred joules of heat are removed from a heat at a temperature of 200 K. What is the entropy...Problem 44P:
In an isothermal reversible expansion at 27 , an ideal gas does 20 J of work. What is the entropy...Problem 45P:
An ideal gas at 300 K is compressed isothermally to one-fifth its original volume. Determine the...Problem 46P:
What is the entropy change of 10 g of steam at 100 when it condenses to water at the same...Problem 47P:
A metal is used to conduct heat between two reservoirs at temperatures Th and Tc , respectively....Problem 48P:
For the Carnot cycle of Figure 4.12, what is the entropy change of the hot reservoir, the cold...Problem 49P:
A 5.0-kg piece of lead at a temperature of 600 is placed in a lake whose temperature is 15 ....Problem 50P:
One mole of an ideal gas doubles its volume in a reversible isothermal expansion. (a) What is the...Problem 51P:
One mole of an ideal monatomic gas is confined to a rigid container. When heat is added reversibly...Problem 52P:
(a) A 5.0-kg rock at a temperature of 20 is dropped into a shallow lake also at 20 from a height...Problem 53P:
A copper rod of cross-sectional area 5.0 cm2 and length 5.0 m conducts heat from a heat reservoir at...Problem 54P:
Fifty grams of water at 20 is heated until it becomes vapor at 100 . Calculate the change in...Problem 55P:
Fifty grams of water at 0 are changed into vapor at 100 . What is the change in entropy of the...Problem 56P:
In an isochoric process, heat is added to 10 mol of monoatomic ideal gas whose temperature increases...Problem 57P:
Two hundred grams of water at 0 is brought into contact with a heat reservoir at 80 . After thermal...Problem 58P:
Suppose that the temperature of the water in the previous problem is raised by fist bringing it to...Problem 59P:
Two hundred grams of water at 0 is brought into contact into thermal equilibrium successively with...Problem 60P:
(a) Ten grams of H2O stats as ice at 0 . The ice absorbs heat from the air (just above 0 ) until all...Problem 61P:
The Carnot cycle is represented by the temperature-entropy diagram shown below. (a) How much heat is...Problem 62P:
A Carnot engine operating between heat reservoirs at 500 and 300 K absorbs 1500 J per cycle at the...Problem 63P:
A monoatomic ideal gas (n moles) goes through a cyclic process shown below. Find the change in...Problem 64P:
A Carnot engine has an efficiency of 0.60. When the temperature of its cold reservoir the efficiency...Problem 65P:
A Carnot engine performs 100 J of work while discharging 200 J of heat each cycle. After temperature...Problem 66P:
A Carnot refrigerator exhausts heat to the air, which is at a temperature of 25 . How much is used...Problem 67AP:
A 300-W heat pump operates between the ground, whose temperature is 0 , and the interior of a house...Problem 68AP:
An engineer must design a refrigerator that does 300 J of work per cycle to extract 2100 J of heat...Problem 69AP:
A Carnot engine employs 1.5 mol of nitrogen gas as a working substance, which is considered as an...Problem 70AP:
A 5.0-kg wood block starts with an initial speed of 8.0 m/s and slides across the floor until...Problem 71AP:
A system consisting of 20.0 mol of a monoatomic ideal gas is cooled at constant pressure from a...Problem 72AP:
A glass beaker of mass 400 g contains 500 g of water at 27 . The beaker is heated reversibly so that...Problem 73AP:
A Carnot engine operates between 550 and 20 baths and produces 300 kJ of energy in each cycle....Problem 74AP:
An ideal gas at temperature T is stored in the left half of an insulating container of volume V...Problem 75AP:
A 0.50-kg piece of aluminum at 250 is dropped into 1.0 kg of water at 20 . After equilibrium is...Problem 76AP:
Suppose 20 g of ice at 0 is added to 300 g of water at 60 . What is the total change in entropy of...Problem 77AP:
A heat engine operates between two temperatures such that the working substance of the engine...Problem 78AP:
A thermal engine produces 4 MJ of electrical energy while operating between two thermal baths of...Problem 79AP:
A coal power plant consumes 100,000 kg of coal per hour and produces 500 MW of power. If the heat of...Problem 80AP:
A Carnot engine operates in a Carnot cycle between a heat source at 550 and a heat sink at 20 ....Problem 81AP:
A Carnot engine working between two heat baths of temperatures 600 K and 273 K completes each cycle...Problem 82AP:
A Carnot cycle working between 100 and 30 is used to drive a refrigerator between 10 and 30 ....Problem 83CP:
(a) infinitesimal amount of heat is added reversibly to a system. By combining the first and second...Problem 84CP:
Using the result of the preceding problem, show that for an ideal gas undergoing an adiabatic...Problem 85CP:
With the help of the two preceding problems, show that S between states 1 and 2 of nmoles an ideal...Problem 86CP:
A cylinder contains 500 g of helium at 120 atm and 20 . The valve is leaky, and all the gas slowly...Problem 87CP:
A diatomic ideal gas is brought from an initial equilibrium state at p1=0.50 atm and T1=300K to a...Problem 88CP:
The gasoline internal combustion engine operates in a cycle consisting of six parts. Four of these...Problem 89CP:
An ideal diesel cycle is shown below. This cycle consists of five strokes. In this case, only air is...Problem 90CP:
Consider an ideal gas Joule cycle, also called the Brayton cycle, shown below. Find the formula for...Problem 91CP:
Derive a formula for the coefficient of performance of a refrigerator using an ideal gas as a...Browse All Chapters of This Textbook
Chapter 1 - Temperature And HeatChapter 2 - The Kinetic Theory Of GasesChapter 3 - The First Law Of ThermodynamicsChapter 4 - The Second Law Of ThermodynamicsChapter 5 - Electric Charges And FieldsChapter 6 - Gauss's LawChapter 7 - Electric PotentialChapter 8 - CapacitanceChapter 9 - Current And ResistanceChapter 10 - Direct-current Circuits
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More Editions of This Book
Corresponding editions of this textbook are also available below:
UNIVERSITY PHYSICS VOL.2 (OER)
17th Edition
ISBN: 9781506698168
University Physics Volume 2
18th Edition
ISBN: 9781938168161
UNIVERSITY PHYSICS,VOL.1 (OER)
18th Edition
ISBN: 2810021150053
UNIVERSITY PHYSICS,VOL.2 (OER)
18th Edition
ISBN: 2810020283899
UNIVERSITY PHYSICS,VOL.2 (OER)
17th Edition
ISBN: 2810022229031
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