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Physics / University Physics 13 / Chapter 17 / Problem 19DQ

University Physics | 13th Edition | ISBN: 9780321675460 | Authors: Hugh D. Young, Roger A. Freedman

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A cold block of metal feels colder than a block of wood at

Chapter 17, Problem 19DQ

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QUESTION:

A cold block of metal feels colder than a block of wood at the same temperature. Why? A hot block of metal feels hotter than a block of wood at the same temperature. Again, why? Is there any temperature at which the two blocks feel equally hot or cold? What temperature is this?

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QUESTION:

A cold block of metal feels colder than a block of wood at the same temperature. Why? A hot block of metal feels hotter than a block of wood at the same temperature. Again, why? Is there any temperature at which the two blocks feel equally hot or cold? What temperature is this?

ANSWER:

Solution 19DQ Step 1 of 4: A cold block of metal feels colder than a block of wood at the same temperature. Why A hot block of metal feels hotter than a block of wood at the same temperature. Again, why When we put finger on an object that is colder than the surface of the finger, heat energy will be transferred from the surface of the finger into the surface of the object, until the temperatures are equalized, by the process of conduction by law of thermodynamics(heat flow from hot to cooler objects). At the same time, heat energy will be transferred from the finger to the warming surface of the of the object. The rate of energy transfer will depend on the difference in temperature - large temperature differences will accelerate the energy transfer, but as the temperatures become closer, the rate will slow down.

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