Figure shows the output from a pressure monitor mounted at a point along the path taken by
Question:
Figure shows the output from a pressure monitor mounted at a point along the path taken by a sound wave of a single frequency traveling at 343 m/s through air with a uniform density of 1.21 kg/m3. The vertical axis scale is set by Δps = 4.0mPa. If the displacement function of the wave is written as s(x, t) = sm cos (kx ?? wt), what are
(a) sm,
(b) k, and
(c) w? The air is then cooled so that its density is 1.35 kg/m3 and the speed of a sound wave through it is 320 m/s. The sound source again emits the sound wave at the same frequency and same pressure amplitude. What now are?
(d) sm,
(e) k, and
(f) w?
Transcribed Image Text:
Ap (mPa) Ap Ap t (ms)
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a The period is T 20 ms or 00020 s and the amplitude is Apm 80 ...View the full answer
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Related Book For
Fundamentals of Physics
ISBN: 978-0471758013
8th Extended edition
Authors: Jearl Walker, Halliday Resnick
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