Question: Bats use echolocation to track down their prey in dark and gather information about their surroundings based on the echoes that return to them. A

Bats use echolocation to track down their prey in dark and gather information about their surroundings based on the echoes that return to them. A bat flies 7m/s towards a mouse that is in ground and uses 70 kHz of clicking sound to locate the mouse. (Speed of sound 343 m/s)
A) what is the frequency of the echo that bat heard after reflecting it from the mouse? (Mouse is stationary)
B) when miuse is running away from the bat, and the bat hears back the echo frequency of 68 kHz, what will be the speed of the mouse?

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