Question

Bats navigate and search out prey by emitting, and then detecting reflections of, ultrasonic waves, which are sound waves with frequencies greater than can be heard by a human. Suppose a bat emits ultrasound at frequency 82.52 kHz while flying with velocity 9.00 m/s as it chases a moth that flies with velocity 8.00 m/s. What frequency does the moth detect? What frequency does the bat detect in the returning echo from the moth?

Name: bats navigate and search out prey by emitting and then detecting reflections of ultrasonic waves which are sound waves with frequencies greater than can be heard by a human suppose a bat emi 00842
Uploaded: 2022-01-22T13:54:17-08:00
Duration: 4 min 29 s
Channel: Vishal Gupta
Description: bats navigate and search out prey by emitting and then detecting reflections of ultrasonic waves which are sound waves with frequencies greater than can be heard by a human suppose a bat emi 00842

          Bats navigate and search out prey by emitting, and then
detecting reflections of, ultrasonic waves, which are sound waves
with frequencies greater than can be heard by a human. Suppose a
bat emits ultrasound at frequency 82.52 kHz while flying with
velocity 9.00 m/s as it chases a moth that flies with velocity 8.00
m/s. What frequency does the moth detect? What frequency does the
bat detect in the returning echo from the moth?

Added by Beatriz P.

University Physics with Modern Physics

Hugh D. Young 14th Edition

Instant Answer

Solved by Expert Vishal Gupta

01/22/2022

Step 1

The frequency detected by the moth can be found using the Doppler effect formula: f' = (v + vr) / (v + vs) * f where f' is the detected frequency, v is the speed of sound, vr is the velocity of the receiver (moth), vs is the velocity of the source (bat), and f Show more…

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Bats navigate and search out prey by emitting, and then detecting reflections of, ultrasonic waves, which are sound waves with frequencies greater than can be heard by a human. Suppose a bat emits ultrasound at frequency 82.52 kHz while flying with velocity 9.00 m/s as it chases a moth that flies with velocity 8.00 m/s. What frequency does the moth detect? What frequency does the bat detect in the returning echo from the moth?