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31-07-2019
Physics

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Steve hears a siren emitting a frequency of 10 kHz when it is at rest. What frequency will Steve hear if the siren moves toward him at 30 m/s? Assume the speed of sound is 340 m/s. Answer options are:
a.11 kHz
b.10 kHz
c. 0 kHz
d. 9 kHz

Respuesta :

gilcarusolautaro gilcarusolautaro

02-08-2019

Answer:

The frequency what Steve will hear is option a) f'≅ 11kHz

Explanation:

f= 10 kHz

v= 340 m/s

vf= 30 m/s

vo= 0

f'= f * (v/ v- vf)

f'=10.96 kHz ≅ 11 kHz

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