18. Waves & Sound
The Doppler Effect
2:45 minutes
Problem 16g
Textbook Question
Textbook QuestionA bat locates insects by emitting ultrasonic 'chirps' and then listening for echoes from the bugs. Suppose a bat chirp has a frequency of 25 kHz. How fast would the bat have to fly, and in what direction, for you to just barely be able to hear the chirp at 20 kHz?
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