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15.24:
(a)
Hz.
118
(b)
mm.
30
.
2
2
s
rad
742
2
π
=
=
=
π
ω
f
A
(c)
m.
90
.
0
m
rad
98
.
6
2
2
=
=
=
λ
π
k
π
(d)
s.
m
106
m
rad
98
.
6
s
rad
742
=
=
=
k
ω
v
(e) The wave is traveling in the –
x
direction because the
phase of
y
(
x
,
t
) has
the form
.
ωt
kx
+
(f) The linear mass density is
m
kg
10
504
.
2
)
m
35
.
1
(
)
kg
10
38
.
3
(
3
3


×
=
×
=
μ
, so the tension is
N
3
.
28
)
s
m
3
.
106
)(
m
kg
10
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