Write the equation for the speed of a sound wave in air.

(N/A) The speed of a sound wave in air is given by the Laplace correction to Newton's formula: $v = \sqrt{\frac{\gamma P}{\rho}}$,where:
$v$ is the speed of sound,
$\gamma$ is the adiabatic index (ratio of specific heats $C_p/C_v$),
$P$ is the pressure of the gas,
$\rho$ is the density of the gas.