Ultrasonic waves with a frequency of 25mhz are used to, Ask an Expert

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Ultrasonic waves with a frequency of 2.5MHz are used to monitor the heartbeat of a fetus. Assume that the speed of sound in human tissue is 1540m/s and that the maximum forward and backward speed of the heart tissue is 20cm/s

(a) Calculate the range of beat frequencies observed for motion of the heart toward and away from the monitor.

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