2. use this following example but with helium

EXAMPLE 16.7 | The speed of sound in water 2.18 X 10' Pa Predict the speed of sound in water at 20 C. V sound = 1480 m/s 998 kg/m SOLVE From Table 16.3, the bulk modulus of water at 20'C is 2.18 X 10' Pa. The density of water is usually given as 1000 kg/m, This is exactly the value given earlier in Table 16.1. but this is at 4 C. To three significant figures, the density at 20 C is 998 kg/m'. Thus we predict