Concept explainers
(a)
The amount of heat that need to flow into Zan to completely melt his body.
(a)
Answer to Problem 84PQ
The amount of heat that need to flow into Zan to completely melt his body is
Explanation of Solution
Zan is initially existing as ice at temperature
In order Zan to completely melt his body, first the
Write the expression for the heat corresponding to temperature change.
Here,
Write the expression for the heat required for phase transition from solid to liquid.
Here,
Write the expression for the total heat absorbed by the body in the process.
Conclusion:
Substitute
Substitute
Substitute
Therefore, the amount of heat that need to flow into Zan to completely melt his body is
(b)
The amount of additional heat required to make the water form of Zan’s body to become vapor at
(b)
Answer to Problem 84PQ
The amount of additional heat required to make the water form of Zan’s body to start vaporizing at
Explanation of Solution
Initial temperature of water is
Write the expression for the heat corresponding to the temperature change.
Conclusion:
Substitute
Therefore, the amount of additional heat required to make the water form of Zan’s body to start vaporizing at
(c)
The amount of additional heat required to make the
(c)
Answer to Problem 84PQ
The amount of additional heat required to make the
Explanation of Solution
The mass of water is
Write the expression for the heat corresponding to the phase transition from liquid to vapor.
Here,
Conclusion:
Substitute
Therefore, the amount of additional heat required to make the
(d)
The average kinetic energy of one of water vapor molecule that make up Zan.
(d)
Answer to Problem 84PQ
The average kinetic energy of one of water vapor molecule that make up Zan is
Explanation of Solution
The temperature of the water vapor is
Write the expression for the average kinetic energy of one molecule of water vapor.
Here,
Conclusion:
Substitute
Therefore, the average kinetic energy of one of water vapor molecule that make up Zan is
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Chapter 21 Solutions
Student Solutions Manual For Katz's Physics For Scientists And Engineers: Foundations And Connections, Volume 1
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