Question 1 of 10

Question 1 of 10 0.7/1 The 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 1.71 kg/m3. The vertical axis scale is set by Aps = 4.30 mPa. If the displacement function of the wave is written as s(x, t) = sm cos(kx - ot), what are (a) sm, (b) k, and (c) w? The air is then cooled so that its density is 1.85 kg/m3 and the speed of a sound wave through it is 321 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? AP (mPa) t (Ins) .40 5.60 (a) (b) (c) Number Number Number 7.63 2.62E3 Units Units Units nm rad/m rad/s