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Your clock radio awakens you with a steady and
irritating sound of frequency 600 Hz. One morning, it
malfunctions and cannot be turned off. In frustration,
you drop the clock radio from rest out of your fourth-
story dorm window, 15.0 m from the ground. Assume
the speed of sound is 343 m/s. As you listen to the
falling clock radio, what frequency do you hear just
before you hear it striking the ground?

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