A sample of N molecules of ideal gas expands with no energy transferred into or out of the gas by heating. The pressure and volume of the gas are measured as it expands, and a graph of pressure as a function of volume is used to calculate the work done by the gas. Which of the following indicates a quantity for the gas that can be determined using the calculated work and justifies why it can be determined? Select two answers. The magnitude of the change in internal energy of the gas can be determined. If no energy is transferred by heating, the magnitude of the change in internal energy equals the magnitude of the work done by the gas. A The change in potential energy of the gas can be determined. The internal energy of the gas equals its potential energy plus its kinetic energy, and the magnitude of the change in kinetic energy of the gas equals the work done by the gas. B The magnitude of the change in the average kinetic energy of a molecule of the gas can be determined. The magnitude of the total change in the kinetic energy of the gas molecules is equal to the magnitude of the work done by the gas, and the magnitude of the change in the average kinetic energy of one molecule is the magnitude of the total change in kinetic energy divided by the number of molecules. The magnitude of the change in the temperature of the gas can be determined. The magnitude of the total change in the kinetic energy of the gas molecules is equal to the magnitude of the work done by the gas, and the magnitude of the change in the temperature of the molecules is the magnitude of the total change in kinetic energy multiplied by the number of molecules. D
A sample of N molecules of ideal gas expands with no energy transferred into or out of the gas by heating. The pressure and volume of the gas are measured as it expands, and a graph of pressure as a function of volume is used to calculate the work done by the gas. Which of the following indicates a quantity for the gas that can be determined using the calculated work and justifies why it can be determined? Select two answers. The magnitude of the change in internal energy of the gas can be determined. If no energy is transferred by heating, the magnitude of the change in internal energy equals the magnitude of the work done by the gas. A The change in potential energy of the gas can be determined. The internal energy of the gas equals its potential energy plus its kinetic energy, and the magnitude of the change in kinetic energy of the gas equals the work done by the gas. B The magnitude of the change in the average kinetic energy of a molecule of the gas can be determined. The magnitude of the total change in the kinetic energy of the gas molecules is equal to the magnitude of the work done by the gas, and the magnitude of the change in the average kinetic energy of one molecule is the magnitude of the total change in kinetic energy divided by the number of molecules. The magnitude of the change in the temperature of the gas can be determined. The magnitude of the total change in the kinetic energy of the gas molecules is equal to the magnitude of the work done by the gas, and the magnitude of the change in the temperature of the molecules is the magnitude of the total change in kinetic energy multiplied by the number of molecules. D
Physics for Scientists and Engineers: Foundations and Connections
1st Edition
ISBN:9781133939146
Author:Katz, Debora M.
Publisher:Katz, Debora M.
Chapter21: Heat And The First Law Of Thermodynamics
Section: Chapter Questions
Problem 44PQ
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Transcribed Image Text:A sample of N molecules of ideal gas expands with no energy transferred into or out of the gas by heating. The pressure and volume of the gas are
measured as it expands, and a graph of pressure as a function of volume is used to calculate the work done by the gas. Which of the following
indicates a quantity for the gas that can be determined using the calculated work and justifies why it can be determined? Select two answers.
The magnitude of the change in internal energy of the gas can be determined. If no energy is transferred by heating, the magnitude
A
of the change in internal energy equals the magnitude of the work done by the gas.
The change in potential energy of the gas can be determined. The internal energy of the gas equals its potential energy plus its
kinetic energy, and the magnitude of the change in kinetic energy of the gas equals the work done by the gas.
The magnitude of the change in the average kinetic energy of a molecule of the gas can be determined. The magnitude of the total
change in the kinetic energy of the gas molecules is equal to the magnitude of the work done by the gas, and the magnitude of the
change in the average kinetic energy of one molecule is the magnitude of the total change in kinetic energy divided by the number
C
of molecules.
The magnitude of the change in the temperature of the gas can be determined. The magnitude of the total change in the kinetic
energy of the gas molecules is equal to the magnitude of the work done by the gas, and the magnitude of the change in the
temperature of the molecules is the magnitude of the total change in kinetic energy multiplied by the number of molecules.
D
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