Mention the audible frequency range for humans.

The ratio of the speed of sound in helium gas to that in nitrogen gas at the same temperature is $\left(\gamma_{He}=\frac{5}{3}, \gamma_{N_2}=\frac{7}{5}, M_{He}=4, M_{N_2}=28\right)$

Derive the expression for the speed of a sound wave and obtain the equations for the speed of sound in different media.

If the temperature of the atmosphere is increased,which of the following characteristics of a sound wave is affected?

Sound travels in rocks in the form of

If $V_m$ is the velocity of sound in moist air and $V_d$ is the velocity of sound in dry air,under identical conditions of pressure and temperature,which of the following is true?