Physics: Principles with Applications (7th Edition)

Published by Pearson
ISBN 10: 0-32162-592-7
ISBN 13: 978-0-32162-592-2

Chapter 12 - Sound - Problems - Page 356: 68

Answer

a. $2.1^{\circ}$ b. $9.8^{\circ}$

Work Step by Step

$sin \theta=\frac{v_{sound}}{v_{obj}}$ a. $$\theta=sin^{-1}(\frac{v_{sound}}{v_{object}})=sin^{-1}(\frac{343m/s}{9200m/s})=2.1^{\circ}$$ b. The speed of sound in seawater is found in Table 12–1. $$\theta=sin^{-1}(\frac{v_{sound}}{v_{object}})=sin^{-1}(\frac{1560m/s}{9200m/s})=9.8^{\circ}$$
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