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Wave length of sound

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What is the wavelength of a 2,000-kHz sound wave (a) in air, (B) in helium, and (c) in water?

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Please see the attached file.

a) Velocity of sound in a liquid is given by the equation : V = √K/ρ ........(1)
where K = Bulk modulus of elasticity of the liquid and ρ is the density.
b) Velocity of sound in a gas is given by the equation : V = √γP/ρ .......(2)

where P = Pressure,
ρ = Density
γ = Ratio of the specific heats of the gas at constant pressure and constant volume ...

Solution Summary

The problem has been solved using the relation between velocity, frequency and wave length.

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