P17_001.PDF

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Chapter 17 - 17.1
1. (a) The angular wave number is
k = 2 π
λ
2 π
1 . 80 m =3 . 49 m 1
=
.
(b) The speed of the wave is
v = λf = λω
2 π = (1 . 8 m)(110 rad / s)
2 π
=31 . 5m / s .
 
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