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A Jet Engine Emits a Whine of Frequency 3000 Hz

Question 70

Multiple Choice

A jet engine emits a whine of frequency 3000 Hz.When the engine is moving directly away from an observer at half the speed of sound,an observer hears a frequency of


A) 1000 Hz
B) 1500 Hz
C) 2000 Hz
D) 4500 Hz
E) 6000 Hz

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