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# Solution: What is the frequency of the sound heard by

#### Problem Statement: Acoustics, Broadcasting and Cable TV Systems Systems

Acoustics Problem Solving

A source of sound having a frequency of 300 Hz is moving at 25 m/s. If the speed of sound in air is 340 m/s, what is the frequency of the sound heard by (a) someone in front of the moving source; (b) someone behind the moving source?

(a) The frequency of the sound heard by someone in front of the moving source is equal to 322.05 Hz

(b) The frequency of the sound heard by someone behind the moving source is equal to 277.94 Hz

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