MCAT Question of the Day
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    Q:

    		 A speaker travels around a 5m circle at a constant tangential velocity with a listener in the middle of the circle. The speaker emits a tune of of f. As the speaker moves around the listener, the listener will hear:
    		 

    A

    		 a constant frequency below f.

    B

    		 a constant frequency of f.

    C

    		 a constant frequency above f.

    D

    		 an oscillating frequency whose period is proportional to 2πf



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