Question

10. The density of water at 200C is 1000kgm-3 and its acoustic impedance is 1.5 x 106kgm-2s-1. What is the speed of sound ,c, in water at this temperature

Answer 1

The acoustic impedance is

$$z=\rho c,\\\space\\ c=\frac z\rho=\frac{1.5·10^6}{1000}=1500\text{ m/s}.$$