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.

Question

Ian Powell

Physics

11 March, 12:39

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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Lillian Baird · Answer 1

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.