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AP Physics 2
14.5 The Doppler Effect
IntermediateMCQMathematicalConceptual18.5k
A bat flying directly toward a stationary vertical wall.
A bat flying directly toward a stationary vertical wall.
A bat flying at a constant speed of \(20\text{ m/s}\) directly toward a flat, stationary cave wall emits an ultrasonic sound wave at a frequency of \(40.0\text{ kHz}\). The speed of sound in the cave air is \(340\text{ m/s}\). Which of the following correctly states the frequency of the echo detected by the bat and provides the correct physical justification?

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