With what speed (as a function of the speed of sound, v) must the source must move away from a stationary observer for the observer to hear the sound with the desired reduced frequency?
With what speed (as a function of the speed of sound, v) must the source must move away from a stationary observer for the observer to hear the sound with the desired reduced frequency?
An Introduction to Physical Science
14th Edition
ISBN:9781305079137
Author:James Shipman, Jerry D. Wilson, Charles A. Higgins, Omar Torres
Publisher:James Shipman, Jerry D. Wilson, Charles A. Higgins, Omar Torres
Chapter3: Force And Motion
Section: Chapter Questions
Problem 2FIB: Forces are ___ quantities. (3.1)
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My answer is incorrect, please write your explanation(process detail) why the answer is v(p)/(1-p) and write why my answer is wrong.
I attach the image and write my process of explanation.
My solution:
When the source is moving away with a speed of vs.
Using Doppler's effect for this case,
f=fo(v/v+vs)
Then the speed f source will be
vs=(fo/f)-1v
putting the values
vs=(fo/pfo)-1v=1p-1v
Hence, the speed of the source (moving away) is vs=1p-1v.
Professor's solution and answer I attach in the image. Don't copy other answer.
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