Thursday
September 18, 2014

Homework Help: Science

Posted by Elijah on Wednesday, January 5, 2011 at 6:57pm.

When energy changes forms, the total amount of energy is conserved. However, the amount of useful energy is
almost always less than the total amount of energy. Explain the energy conversions and unwanted energy that might be produced by the hinges of a squeaky door.

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