Answer
$k = 16~m^{-1}$
Work Step by Step
We found that $\lambda = 0.40~m$
We can find $k$:
$k = \frac{2\pi}{\lambda}$
$k = \frac{2\pi}{0.40~m}$
$k = 16~m^{-1}$
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 473: 23f
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