How fast must he walk away from the wall

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Reference no: EM13343427

A student holds a tuning fork oscillating at 260 Hz. He walks towards a wall at a constant speed of 1.16 m/s.

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

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

Reference no: EM13343427

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