Figure 17-32 shows the output from a pressure monitor

Chapter , Problem 14

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Figure 17-32 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 %ps # 4.0 mPa.If the displacement function of the wave is s(x, t) # sm cos(kx $ vt), what are (a) sm, (b) k, and (c) v? 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) v?1 1 2 t (ms) p (mPa) ps ps Figure 17-32 14.