Question

A dog whistle is designed to produce a sound with a frequency beyond that which can be heard by humans (between 20,000 Hz and 27,000 Hz). If a particular whistle produces a sound with a frequency of 25,000 Hz, what is the sound’s speed? Assume the wavelength of this sound wave in air is 0.013m. *

4 points
325 m/s
250 m/s
113 m/s
467 m/s

Answer 1

Speed of the sound in air is 325 m/s

Step-by-step explanation:

As we know that the frequency of the sound is given as

`f = 25000 Hz`

wavelength of the sound is given as

`\lambda = 0.013 m`

now we have

`v = \lambda f`

so we have

`v = (0.013)(25000)`

`v = 325 m/s`