A Horseshoe Bat Is Most Sensitive at a Frequency of 76

question 15

Essay

A horseshoe bat is most sensitive at a frequency of 76 kHz and is flying toward a moth at 6 m/s; the moth is flying away at 3 m/s. What is the sound the bat needs to emit in order to hear the echo back at the same frequency? The speed of sound in air is 343 m/s.

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