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3 November, 20:28

A bat flies toward a wall, emitting a steady sound of frequency 1.70 khz. this bat hears its own sound plus the sound reflected by the wall.

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  1. 3 November, 21:58
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    I believe the question is missing this sentence: how fast should the bat fly in order to hear a beat frequency of 8.00 Hz? The solution would be like this for this specific problem:

    8.00 / 1700 = 2 * v / 340m/s

    v = 0.8 m/s

    So, in order to hear a beat frequency of 8.00 Hz, the bat should fly 0.8m/s.
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