• (a) If a solid bar of aluminum 1.00 m long is
struck at one end with a hammer, a
longitudinal pulse propagates down the bar.
Find the speed of sound in the bar, which has
a Young’s modulus of 7.0 x 1010 Pa and a
density of 2.7 x 103 kg/m3. (b) Calculate the
speed of sound in ethyl alcohol, which has a
density of 806 kg/m3 and bulk modulus of 1.0
x 109 Pa. (c) Compute the speed of sound in
air at 35.0°C.