Physics for Scientists and Engineers: A Strategic Approach with Modern Physics (3rd Edition)

Published by Pearson
ISBN 10: 0321740904
ISBN 13: 978-0-32174-090-8

Chapter 20 - Traveling Waves - Exercises and Problems: 20

Answer

(a) $\lambda = 3.2\times 10^{-3}~m$ (b) $f = 9.4\times 10^{10}~Hz$

Work Step by Step

(a) We can find the wavelength as: $\lambda = \frac{v}{f}$ $\lambda = \frac{6320~m/s}{2.0\times 10^6~Hz}$ $\lambda = 3.2\times 10^{-3}~m$ (b) We can find the frequency of an electromagnetic wave with this wavelength as: $f = \frac{v}{\lambda}$ $f = \frac{3.0\times 10^8~m/s}{3.2\times 10^{-3}~m}$ $f = 9.4\times 10^{10}~Hz$
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