Conceptual Physics (12th Edition)

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

Chapter 26 - Think and Solve: 34

Answer

t = 0.0001 second.

Work Step by Step

The round trip is 30 km. If c denotes the speed of light, then d = 30 km = ct. Solve for t = d/c. $$\frac{30 km}{300,000 km/s} = 0.0001 s$$
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