Question

A dog can hear sounds in the range from 15

to 50,000 Hz.
What wavelength corresponds to the lower
cut-off point of the sounds at 20^◦C where the
sound speed is 344 m/s?
Answer in units of m.

Answer 1

The wavelength corresponds to the lower cut-off point of the sounds is 22.93 meter

Solution:

Given that,

A dog can hear sounds in the range from 15 to 50,000 Hz

The speed of sound at a temperature of
`20^(\circ)C` is: 344 m/s

To find: wavelength

`\lambda= (v)/(f)`

Where,

v is speed of sound

f is the frequency

f = lower cut off point = 15 Hz

`\lambda = (344)/(15)\\\\\lambda = 22.93`

Thus the wavelength corresponds to the lower cut-off point of the sounds is 22.93 meter