Question

What is the formula of sound​

Answer 1

Answer:

P = pressure

ρ = density

γ = Ratio of specific heat.

Example

The sound wave with density o.o43 kg/m3 and pressure of 3kPa having the temp 30C travels in the air. Find out the speed of the sound?

Solution:

Given:

Temperature T = 276 K

Density ρ = 0.043 kg/m3

Pressure p = 3kPa = 3000 Pa

The ratio of specific heat in air = 1.4

The formula for speed of sound is

P = pressure  ρ = density  γ = Ratio of specific heat.

Therefore, speed of sound = 312.52 m/s