Question

a sound wave travel at a speed of 399m/s .if its wavelengths is 1.5cm what is the frequency of the wave will it be audible?

2. show the sound wave in grafic form and mention crust ,trough,wave length and amplitude of the wave in it?

3.calculate the wavelength of sound wave whose frequency is 220h2 and speed is 440m/s in a given medium?











2.show

















?

Answer 1

1) 1.5cm=0.015m
frequency=velocity/wavelength
=399/0.015
=26600Hz
It will not be audible to us.

Answer 2

26600 Hz. It will be inaudible to us.