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 21 - Superposition - Conceptual Questions - Page 620: 8

Answer

$\rm 4\;mm,0\;mm,-4\;mm$

Work Step by Step

At point a, there is constructive interference. Thus, the net displacement of the medium is $$D_a=2+2=\color{red}{\bf 4}\;\rm mm$$ At point b, there is destructive interference. Thus, the net displacement of the medium is $$D_b=2+(-2)=\color{red}{\bf 0}\;\rm mm$$ At point c, there is constructive interference as well. Thus, the net displacement of the medium is $$D_c=-2+(-2)=\color{red}{\bf -4}\;\rm mm$$
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