Physics for Scientists and Engineers: A Strategic Approach with Modern Physics (4th Edition)

Published by Pearson
ISBN 10: 0133942651
ISBN 13: 978-0-13394-265-1

Chapter 16 - Traveling Waves - Exercises and Problems: 42

Answer

(a) $\beta = 65~dB$ (b) $\beta = 105~dB$

Work Step by Step

(a) We can find the sound intensity level for the wave. $\beta = 10~log(\frac{I}{I_0})$ $\beta = 10~log(\frac{3.0\times 10^{-6}~W/m^2}{10^{-12}~W/m^2})$ $\beta = 65~dB$ (b) We can find the sound intensity level for the wave. $\beta = 10~log(\frac{I}{I_0})$ $\beta = 10~log(\frac{3.0\times 10^{-2}~W/m^2}{10^{-12}~W/m^2})$ $\beta = 105~dB$
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