MCAT Question of the Day
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    Q:

    		 As a receiver moves away from a source of sound, the energy of the sound wave at a given distance decreases in proportion to which of the following?
    		 

    A

    		 the surface area of a sphere

    B

    		 the volume of a sphere

    C

    		 the circumference of a circle

    D

    		 the the surface area of a cube



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