MCAT Question of the Day
    •

    Q:

    		 Various experiments are held evaluating listener's perceptions of the pitch of various sounds and emotional attachments to the pitches played to listeners. To perform such an experiment, a sound device would be needed that would be able to vary:
    		 

    A

    		 volume.

    B

    		 frequency.

    C

    		 wavelength.

    D

    		 noise.



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