Physics: Principles with Applications (7th Edition)

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

Chapter 11 - Oscillations and Waves - General Problems - Page 327: 87

Answer

a) $\theta_{iM}=\arcsin(\frac{v_i}{v_r})$ b) $0.44m$

Work Step by Step

a) $\frac{\sin(\theta_r)}{\sin(\theta_i)}=\frac{v_r}{v_i}$ $\theta_r=90^o$ $\theta_{iM}=\arcsin(\frac{v_i}{v_r})$ b) $v_i=343m/s$ $v_r=1440m/s$ $\theta_{iM}=\arcsin(\frac{343m/s}{1440m/s})=13.78^o$ $\tan(\theta)=\frac{x}{y}$ $x=y\tan(\theta)=(1.8m)\tan(13.78^o)=0.44m$
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