Serway_PSE_quick_ch19

# Serway_PSE_quick_ch19 - Physics for Scientists and...

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Physics for Scientists and Engineers, 6e Chapter 19 - Temperature

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Two objects, with different sizes, masses, and temperatures, are placed in thermal contact. Energy travels 1 2 3 33% 33% 33% 1 2 3 4 5 1. from the larger object to the smaller object 2. from the object with more mass to the one with less 3. from the object at higher temperature to the object at lower temperature
The direction of the transfer of energy depends only on temperature and not on the size of the object or on which object has more mass.

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Consider the following pairs of materials. Which pair represents two materials, one of which is twice as hot as the other? 1 2 3 4 25% 25% 25% 25% 1 2 3 4 5 1. boiling water at 100°C, a glass of water at 50°C 2. boiling water at 100°C, frozen methane at -50°C 3. an ice cube at -20°C, flames from a circus fire- eater at 233°C 4. No pair represents materials one of which is twice as hot as the other
The phrase “twice as hot” refers to a ratio of temperatures. When the given temperatures are converted to kelvins, only those in part (3) are in the correct ratio.

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## This note was uploaded on 01/19/2010 for the course PHYS 200 taught by Professor Davies during the Spring '08 term at Roger Williams.

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Serway_PSE_quick_ch19 - Physics for Scientists and...

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