Tutorials in Introductory Physics
1st Edition
ISBN: 9780130970695
Author: Peter S. Shaffer, Lillian C. McDermott
Publisher: Addison Wesley
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Chapter 13.2, Problem 3cT
To determine
The heat transfer to the boiling water.
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A heat pump with a COP of 2.8 is used to heat an air-tight house. When running, the heat pump consumes 5 kW of power. If the temperature in the house is 7°C when the heat pump is turned on, how long will it take for the heat pump to raise the temperature of the house to 22°C? Is this answer realistic or optimistic? Explain. Assume the entire mass within the house (air, furniture, etc.) is equivalent to 1500 kg of air.
* Question Completion Status:
WA
V
Th
To
= 293 K
Room temperature T.
V
Vo
Vo
The gas volume changes from Vp to Va at constant temperature T. The cartoon on the right shows a piston of gas undergoing this
compression while submerged in a container of room temperature water, which acts as a reservoir.
The initial state of this process is a piston containing 2 moles of a monatomic gas at T, = 293 K (room temperature water) and volume Vh =
1.0 m3. The gas is compressed until Va = 0.2 m. During the compression, the heat bath of room temperature water maintains the
temperature of the gas at T.= 293 K.
Calculate the work done in joules by the gas during this process.
Do not include units in your answer.
Be careful to use the standard sign convention for work done by the gas.
Write your numerical answer in normal form as described above in the instructions to this worksheet.
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同
近
A constant mass of an ideal gas is heated from 300 K to 1000 K in a piston cylinder device while
maintaining the pressure constant either at 1 bar (process A) or at 10 bars (Process B). Ignore KE and
PE changes. Which of the following is true regarding heat transfer in the two processes? You MUST
Justify your answer with equations to receive any credit on this problem.
I.
Qa=QB
II.
QAQB
IV.
Insufficient information.
Chapter 13 Solutions
Tutorials in Introductory Physics
Ch. 13.1 - Prob. 1aTCh. 13.1 - In the space provided, draw an arrow to indicate...Ch. 13.1 - Prob. 1cTCh. 13.1 - Prob. 1dTCh. 13.1 - Prob. 1eTCh. 13.1 - Prob. 2aTCh. 13.1 - Prob. 2bTCh. 13.1 - Consider the following student dialogue. Student...Ch. 13.1 - Sketch the process described in section II on the...Ch. 13.1 - Prob. 3bT
Ch. 13.1 - Prob. 4aTCh. 13.1 - A student looks up the molar masses and finds the...Ch. 13.1 - Prob. 4cTCh. 13.2 - Recall the definition of work done on an object by...Ch. 13.2 - Prob. 1bTCh. 13.2 - Prob. 1cTCh. 13.2 - Prob. 2aTCh. 13.2 - Does the internal energy of a gas in an insulated...Ch. 13.2 - Two students are discussing process 1: Student 1:...Ch. 13.2 - Imagine that the cylinder from section II is no...Ch. 13.2 - In process 2, is the heat transfer to the gas...Ch. 13.2 - Prob. 3cTCh. 13.2 - Prob. 4aTCh. 13.2 - In process 1 (section II) you did not need to...Ch. 13.2 - In process 2 (section III) you did not need to...Ch. 13.2 - Prob. 4dTCh. 13.2 - How does the compression in process 3 differ from...Ch. 13.2 - A student is considering process 3: “The...
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