L22_Thermo1

L22_Thermo1 - Spontaneity, Entropy, and Free Energy Chapter...

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Spontaneity, Entropy, and Free Energy Chapter 13 Review Thermochemistry (Ch. 12) Thermodynamics
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The magnet at the front of the car pulls on the steel anvil, moving the car forward. When the driver wishes to slow or stop the vehicle, he pulls the lever that rotates the magnet to a less effective position. Then he may apply the brake. Design by Hans-Peter Gramatke.
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Mr. Hans-Peter Gramatke 1 . Is a geni u s a n d .. 2. Should be l o c. 3 Its an eng i neer. 33% 33% 33% 1. Is a genius and his machine will solve the energy crisis and global warming. 2. Should be locked up in the asylum because his machine violates an important law. 3. Its an engineering challenge to make this work by finding the proper magnet, gears, reducing the friction, etc.
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This is an example of perpetuum mobile , a device based on mechanical, chemical, electrical or other physical processes which, when started, will remain in operation forever and provide additional work as well. Only the natural wear of the components will eventually stop its operation.
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First Law of Thermodynamcis: “Energy cannot be created or destroyed.”
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This note was uploaded on 07/22/2008 for the course CHEM 115b taught by Professor Reisler during the Spring '08 term at USC.

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L22_Thermo1 - Spontaneity, Entropy, and Free Energy Chapter...

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