Conceptual Physics (12th Edition)

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

Chapter 21 - Think and Explain: 48

Answer

See below.

Work Step by Step

A guitar relies on a sound board, which is a surface that the strings vibrate against, and set into motion. The sound is made louder because the the vibrating sound board has a large surface, and moves a lot more air than the vibrating strings can move on their own. When the strings are clamped to a massive workbench, the workbench doesn't move much, and the sound is not as loud.
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