A student holds a tuning fork oscillating at 258 hz he

A student holds a tuning fork oscillating at 258 Hz. He walks towards a wall at a constant speed of 1.42 m/s.

(a) What beat frequency does he observe between the tuning fork and its echo?

(b) How fast must he walk away from the wall to observe a beat frequency of 4.50 Hz?

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A student holds a tuning fork oscillating at 258 hz he : a student holds a tuning fork oscillating at 258 hz. he walks towards a wall at a constant speed of 1.42 ms.a what beat

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