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QUESTION

bat moving at 5.4 m/s is chasing a flying insect. The bat emits a 42 kHz chirp and receives back an echo at 42.74 kHz. At what speed is the bat

bat moving at 5.4 m/s is chasing a flyinginsect. The bat emits a 42 kHz chirp andreceives back an echo at 42.74 kHz.At what speed is the bat gaining on itsprey? Take the speed of sound in air to be337 m/s.Answer in units of m/s.

Solution:The insect is assumed to be a perfect reflector.According to the Doppler Effect, the following formula holds. f is the apparent frequency observed by the detector, f0 is the frequency at...
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