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A bat uses an ultrasound frequency of 10 MHz to locate a moth. Assume the speed of sound is 340 m/s. a. If the

A bat uses an ultrasound frequency of 10 MHz to locate a moth. Assume the speed of sound is 340 m/s. a. If the echo returns after 0.25 s, how far away is the moth from the bat? b. If the returning frequency is 10.25 MHz, what is the velocity of the moth? c. Is the moth moving toward or away from the bat? How do you know?

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