Conceptual Physics (12th Edition)

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

Chapter 26 - Reading Check Questions (Comprehension) - Page 500: 4

Answer

If the electromagnetic wave slowed down, the regeneration of waves would decrease, and the wave would lose energy. As expected, we observe that the wave does not slow down, and energy is conserved.

Work Step by Step

This is discussed on page 488.
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