The Doppler Effect using ultrasonic waves of frequencies 2.25 × 106 H z is used to monitor the heart- beat of a fetus. A

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The Doppler Effect using ultrasonic waves of frequencies 2.25 × 106 H z is used to monitor the heart- beat of a fetus. A

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The Doppler Effect using ultrasonic waves of frequencies 2.25 ×106 H z is used to monitor the heart- beat of a fetus. A (maximum)beat frequency of 240Hz is observed. Assuming that the speed ofsound in tissue is 1540m/s, calculate the maximum velocity of thesurface of the beating heart.
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