chapter11.1-11.2_slides

chapter11.1-11.2_slides - 11/8/2009 Chapter 11 Energy in...

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11/8/2009 1 Chapter 11 Energy in Thermal Processes James Prescott Joule 1818 1889 When two objects of different temperatures are placed in thermal contact, the temperature of the hot decreases and the temperature of the cold increases - Energy is transferred from hot object to cold - Any object, even without macroscopic motion, has energy internal energy hot cold If in contact, they will reach the same temperature eventually
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11/8/2009 2 Need to broaden the concept of mechanical energy - Macroscopic mechanical energy (KE + PE) - Microscopic mechanical energy: internal energy U (also KE + PE, but associate with microscopic particles such as atoms and molecules) Ideal monatomic gas: v 2 2 1 mv KE nRT KE U c microscopi 2 3 Internal Energy , U, is the energy associated with the microscopic components of the system - Includes kinetic and potential energy Internal kinetic energy: include - translational - rotational, and - vibrational energy Ideal gas
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This note was uploaded on 01/02/2010 for the course PHY 101 taught by Professor Pralle during the Spring '08 term at SUNY Buffalo.

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chapter11.1-11.2_slides - 11/8/2009 Chapter 11 Energy in...

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