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19. (a) The wave speed is given by
v
=
λ
/
T
=
ω
/
k
, where
λ
is the wavelength,
T
is the
period,
is the angular frequency (2
π
/
T
), and
k
is the angular wave number (2
π
/
λ
). The
displacement has the form
y
=
y
m
sin(
kx
+
t
), so
k
= 2.0 m
–1
and
= 30 rad/s. Thus
v
= (30 rad/s)/(2.0 m
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This note was uploaded on 06/03/2011 for the course PHY 2049 taught by Professor Any during the Spring '08 term at University of Florida.
 Spring '08
 Any
 Physics

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