Question

A bat flying toward a wall emits a 39000-Hz sonar pulse. The pulse is reflected back...

A bat flying toward a wall emits a 39000-Hz sonar pulse. The pulse is reflected back from the wall and the bat hears the reflected pulse at a frequency of (39000 + 720) Hz. Take the speed of sound to be 343 m/s.

Find the speed of the bat, in meters per second.

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Answer #1

The emitted frequencey of sonar pulse,

Frequency of reflected pulse,

Velocity of sound,

We have the relation,

whrere is the velocity of bat. Sustituting all the values

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