COLLEGE PHYSICS
2nd Edition
ISBN: 9781464196393
Author: Freedman
Publisher: MAC HIGHER
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Question
Chapter 14, Problem 31QAP
To determine
The ring's hole if you heat a thin, circular ring so that its temperature is twice what it was originally,
A. becomes larger.
B. becomes smaller by an unknown amount.
C. remains the same size.
D. becomes four times smaller.
E. becomes two times smaller.
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Chapter 14 Solutions
COLLEGE PHYSICS
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- Construct Your Own Problem Consider a person outdoors on a cold night. Construct a problem in which you calculate the rate of heat transfer from the person by all three heat transfer methods. Make the initial circumstances such that at rest the person will have a net heat transfer and then decide how much physical activity of a chosen type is necessary to balance the rate of heat transfer. Among the things to consider are the size of the person, type of clothing, initial metabolic rate, sky conditions, amount of water evaporated, and volume of air breathed. Of course, there are many other factors to consider and your instructor may wish to guide you in the assumptions made as well as the detail of analysis and method of presenting your results.arrow_forwardOn a certain dry sunny day, a swimming pool 's temperature would rise by 1.50 if not for evaporation. What fraction of the water must evaporate to carry away precisely enough energy to keep the temperature constant?arrow_forwardFor the human body, what is the rate of heat transfer by conduction through the body’s tissue with the following conditions: the tissue thickness is 3.00 cm, the change in temperature is 2.00C, and the skin area is 1.50m2. How does this compare with the average heat transfer rate to the body resulting from an energy intake of about 2400 kcal per day? (No exercise is included.)arrow_forward
- Can the thermal resistance concept be used for a solid cylinder or sphere in steady operation? Explain.arrow_forwardThe temperature difference between the hot and cold fluids in a heat exchanger is given to be DT1 at one end and DT2 at the other end. Can the logarithmic temperature difference DTlm of this heat exchanger be greater than both DT1 and DT2? Explain.arrow_forwardA 0.500-kg of cold water at 1°C is placed in 0.400 kg of 35.0°C water in a very well-insulated container. What is the final temperature? See Example 14.3 for help solving this problem. Make sure to check whether there is a change of phase during the given temperatures.arrow_forward
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