How does the speed of sound in air depend on air pressure?

Question

thanks in advance for all your help..

Answer 1

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Thinner air has less atoms floating around in it than denser(higher pressure) air. Since sound waves travel faster when unimpeded, less air pressure equates to faster speed due to decreased atmospheric 'viscosity'.

Answer 2

Its really easy.
See.when the pressure increases,the density also increases.which means that the particles come close together.And when the particles come close together,sound easily passes through the and vice versa.
I hope my answer helped.
Best of Luck !!!

Answer 3

The speed of sound in air is: c =sqrt(gamma p/rho)
gamma = Cp/Cv ; rho = density of the air.
If the air is a ideal gas : p/rho = RT/M
M is molecular weight.

Answer 4

speed of sound in air is directly proportional to the square root of pressure.

Answer 5

The change of pressure have no effect on the velocity of sound in air ( or any other gas). Thus, the velocity of sound will be the same at the foot of a mountain and at its top. But the velocity of sound in air depends only on density, humidity and temperature.