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

Question

Stephenson

Physics

14 August, 14:58

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

+3

Answers (1)

Know the Answer?

Major · Answer 1

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

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 kHzb. 10 kHzc. 0 kHzd. 9 kHz

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