Conceptual Physics (12th Edition)

Published by Addison-Wesley
ISBN 10: 0321909100
ISBN 13: 978-0-32190-910-7

Chapter 25 - Think and Explain: 79

Answer

Never.

Work Step by Step

Energy is conserved, and nothing can create it or destroy it. Energy can be transformed into different forms, but it can't be "stepped up".
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