Answer
$\lambda=31cm$
Work Step by Step
We can find the wavelength as
$\lambda=\frac{2\pi}{k}$
We plug in the known values to obtain:
$\lambda=\frac{2\pi}{k}=\frac{2(3.1416)}{20}=0.31m=31cm$
Fundamentals of Physics Extended (10th Edition)
by Halliday, David; Resnick, Robert; Walker, Jearl
Published by
Wiley
ISBN 10:
1-11823-072-8
ISBN 13:
978-1-11823-072-5
Chapter 16 - Waves-I - Problems - Page 476: 65d
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