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A Siren Emitting Sound of Frequency 1000 Hz Approaches a Stationary

Question 106

Multiple Choice

A siren emitting sound of frequency 1000 Hz approaches a stationary observer at one-half the speed of sound.The observer hears a frequency of

A) 1000 Hz
B) 2000 Hz.
C) 500 Hz.
D) 1500 Hz.
E) none of the above.

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