# Wave length of sound

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

© BrainMass Inc. brainmass.com October 24, 2018, 8:01 pm ad1c9bdddfhttps://brainmass.com/physics/specific-heat/wave-length-sound-85763

#### Solution Preview

Please see the attached file.

SOLUTION

___

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.

Frequency and wavelength of emitted sound wave

39. A violin string 17.8 cm long and fixed at both ends oscillates in it's n = 5 mode. The speed of waves on the string is 206 m/s, and the speed of sound in air is 348 m/s. What are (a) the frequency and (b) the wavelength of the emitted sound wave?

51. The A string of a violin is a little too tightly stretched. Beats at 4 per second are heard when the string is sounded together with a tuning fork that is oscillating accurately at concert A (440 Hz). What is the period of the violin string oscillation?

View Full Posting Details