EBK PHYSICS
5th Edition
ISBN: 8220103026918
Author: Walker
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Concept explainers
Question
Chapter 18, Problem 58PCE
(a)
To determine
The heat that is removed from the outside air by the heat pump.
(b)
To determine
The temperature of the outside air.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
When gasoline burns in an automobile engine, the heat released (342 J) causes the products CO2 and H2O to expand, which pushes the pistons outward. Excess heat is removed by the car’s cooling system. If the work associated with the expanding gases is equal to 474 J, how much is the change in internal energy of the gases?
Solar energy is used for air conditioning a house. To maintain a pressurized water tank at 443 K solar radiation is allowed. At a particular time interval, 301kJ of heat is extracted from the house to maintain its temperature at 301K when the surroundings temperature is 310K. Consider the tank of water, the house and the surroundings as heat reservoirs, what is the minimum heat (in kJ ,2 decimal places) that must be extracted from the tank of water by any device built to accomplish the required cooling of the house. No other sources of energy are available.
A 220-lb athlete drinks a glass of soda (125 calories) and walks up to the top of a Library Building. What is the change in his internal energy, assuming the only heat transfer is the 125 calories from the soda drink, and the only work done by the athlete is lifting his own weight to the 6th floor? Assume 3m per floor.
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...
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.Similar questions
- If a gas is compressed isothermally, which of the following statements is true? (a) Energy is transferred into the gas by heat. (b) No work is done on the gas. (c) The temperature of the gas increases. (d) The internal energy of the gas remains constant. (e) None of those statements is true.arrow_forwardThe insulated cylinder shown below is closed at both ends and contains an insulating piston that is flee to move on frictionless bearings. The piston divides the chamber into two compartments containing gases A and B. Originally, each compartment has a volume of 5.0102 m3 and contains a monatomic ideal gas at a temperature of and a pressure of 1.0 atm. (a) How many moles of gas are in each compartment? (b) Heat Q is slowly added to A so that it expands and B is compressed until the pressure of both gases is 3.0 atm. Use the fact that the compression of B is adiabatic to determine the final volume of both gases. (c) What are their final temperatures? (d) What is the value of Q?arrow_forwardA heat pump has a coefficient of performance of 3.80 and operates with a power consumption of 7.03 103 W. (a) How much energy does it deliver into a home during 8.00 h of continuous operation? (b) How much energy does it extract from the outside air?arrow_forward
- A heat pump used for heating shown in Figure P18.25 is essentially an air conditioner installed backward. It extracts energy from colder air outside and deposits it in a warmer room. Suppose the ratio of the actual energy entering the room to the work done by the devices motor is 10.0% of the theoretical maximum ratio. Determine the energy entering the room per joule of work done by the motor given that the inside temperature is 20.0C and the outside temperature is 5.00C. Figure P18.25arrow_forwardWhen a gas undergoes an adiabatic expansion, which of the following statements is true? (a) The temperature of the gas does not change. (b) No work is done by the gas. (c) No energy is transferred to the gas by heat. (d) The internal energy of the gas does not change. (e) The pressure increases.arrow_forwardWhen 400 J of heat are slowly added to 10 mol of an ideal monatomic gas, its temperature rises by 10 . What is the work done on the gas?arrow_forward
- A thermodynamic system undergoes a process in which its internal energy decreases by 500 J. Over the same time interval, 220 J of work is done on the system. Find the energy transferred from it by heat.arrow_forwardFor a temperature increase of 10 at constant volume, what is the heat absorbed by (a) 3.0 mol of a dilute monatomic gas; (b) 0.50 mol of a dilute diatomic gas; and (c) 15 mol of a dilute polyatomic gas?arrow_forwardA multicylinder gasoline engine in an airplane, operating at 2.50 103 rev/min, takes in energy 7.89 103 J and exhausts 4.58 103 J for each revolution of the crankshaft. (a) How many liters of fuel does it consume in 1.00 h of operation if the heat of combustion of the fuel is equal to 4.03 107 J/L? (b) What is the mechanical power output of the engine? Ignore friction and express the answer in horsepower. (c) What is the torque exerted by the crankshaft on the load? (d) What power must the exhaust and cooling system transfer out of the engine?arrow_forward
- An insulated container is filled with a mixture of water and ice at zero °C. An electric heating element inside the container is used to add 1680 J of heat to the system while paddle does 450 J of work by stirring. What is the increase in the internal energy of the ice-water system?arrow_forwardA heat pump is a heating system that has an efficiency of about 150 %, that is,for every joule (J) the electrical energy consumed, 1.5 J of heat is produced. Yet according to the law from energy conservation, the energy efficiency of a device should never come into over 100%, since energy cannot be created or destroyed. So there is thermal energy that is transferred from the outside to the inside of the house. Explain why this phenomenon remains possible, even under 0 °C.arrow_forwardA hot air balloon is being inflated to its full extent by heating the air inside it. In the final stages of this process, the volume of the balloon changes from 4.00 x 10^6 L to 4.2 x 10^6 L by the addition of 1.3 x 10^8 J of energy as heat. Assuming that the balloon expands against a constant pressure of 1.0 atm, how much work does the balloon perform?arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Physics for Scientists and Engineers, Technology ...PhysicsISBN:9781305116399Author:Raymond A. Serway, John W. JewettPublisher:Cengage Learning
Physics for Scientists and Engineers: Foundations...PhysicsISBN:9781133939146Author:Katz, Debora M.Publisher:Cengage Learning
Principles of Physics: A Calculus-Based TextPhysicsISBN:9781133104261Author:Raymond A. Serway, John W. JewettPublisher:Cengage Learning
Physics for Scientists and EngineersPhysicsISBN:9781337553278Author:Raymond A. Serway, John W. JewettPublisher:Cengage Learning
Physics for Scientists and Engineers with Modern ...PhysicsISBN:9781337553292Author:Raymond A. Serway, John W. JewettPublisher:Cengage Learning
Physics for Scientists and Engineers, Technology ...
Physics
ISBN:9781305116399
Author:Raymond A. Serway, John W. Jewett
Publisher:Cengage Learning
Physics for Scientists and Engineers: Foundations...
Physics
ISBN:9781133939146
Author:Katz, Debora M.
Publisher:Cengage Learning
Principles of Physics: A Calculus-Based Text
Physics
ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
Publisher:Cengage Learning
Physics for Scientists and Engineers
Physics
ISBN:9781337553278
Author:Raymond A. Serway, John W. Jewett
Publisher:Cengage Learning
Physics for Scientists and Engineers with Modern ...
Physics
ISBN:9781337553292
Author:Raymond A. Serway, John W. Jewett
Publisher:Cengage Learning