What is the formula of sound

The formula for the speed of sound ($v$) in a medium is given by:

$$v = \sqrt{\frac{E}{\rho}}$$

where:

• $v$ is the speed of sound
• $E$ is the elastic modulus of the medium (e.g., bulk modulus for fluids, Young's modulus for solids)
• $\rho$ (rho) is the density of the medium

For gases, this formula can be expressed in terms of temperature and molar mass.