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

Answer:

Speed of the sound in air is 325 m/s

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

$v = (0.013)(25000)$

$v = 325 m/s$