Answer
The two speeds are the same.
Work Step by Step
x^{y}This is discussed on page 492. If it re-emerges into the same medium (e.g., air), the light will be traveling at the same speed.
Conceptual Physics (12th Edition)
by Hewitt, Paul G.
Published by
Addison-Wesley
ISBN 10:
0321909100
ISBN 13:
978-0-32190-910-7
Chapter 26 - Reading Check Questions (Comprehension) - Page 500: 21
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