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College Physics

11th Edition
Raymond A. Serway + 1 other
ISBN: 9781305952300

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BuyFindarrow_forward

College Physics

11th Edition
Raymond A. Serway + 1 other
ISBN: 9781305952300
Textbook Problem

An airplane traveling at half the speed of sound emits a sound of frequency 5.00 kHz. At what frequency does a stationary listener hear the sound (a) as the plane approaches? (b) After it passes?

(a)

To determine
Frequency heard by the stationary listener as the plane approaches.

Explanation

Given Info: Frequency of sound emitting from the airplane is 5 Hz, and the speed of the plane is half the speed of sound v/2.

Formula for frequency of sound heard from a approaching airplane is,

(f0)approa=fs(v+v0vvs)

  • (f0)approa  is frequency  of sound heard while the plane is approaching.
  • v0 is the velocity of the stationary listener

(b)

To determine
Frequency heard by the stationary listener after the plane passes.

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