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Problem
Problem
The pressure variation in a sound wave in air is given by
Δ
p
=
12
sin
(
8.18
x
−
2700
t
+
π
/
4
)
N/m
2
\Delta p = 12 \sin (8.18x - 2700t + \pi/4) \text{ N/m}^2
Δ
p
=
12
sin
(
8.18
x
−
2700
t
+
π
/4
)
N/m
2
Find the displacement amplitude. Density of air =
1.29
kg/m
3
1.29 \text{ kg/m}^3
1.29
kg/m
3
.
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