Problem

Calculate the speed of longitudinal waves in the following gases at

0^\circ\text{C}

and

1\text{ atm}

(

= 10^5\text{ Pa}

): (a) oxygen for which the bulk modulus is

1.41 \times 10^5\text{ Pa}

and density is

1.43\text{ kg/m}^3

. (b) helium for which the bulk modulus is

1.7 \times 10^5\text{ Pa}

and the density is

0.18\text{ kg/m}^3