Question

What is the speed of sound in dry air at 0°C?

Answer 1

331.31 m/s

Step-by-step explanation:

The speed of sound in air is given by,
`v = \sqrt{(γRT)/(M) }`

where γ = ratio of molar heat capacity of the gas (1.401 @ 0 °C)

R = Universal gas constant ( 8.314 J/ molK)

T = absolute temperature (kelvin temperature) (273 K)

M = molar mass of gas (28.97 g/mol)

using these values,

`v = \sqrt{(1.401×8.314×273)/(0.02897) }`

= 331.31 m/s