The speed of ultrasound in human body is 1540 m/s. A procedure is performed with a frequency of 2.57 MHz is used. To mon
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The speed of ultrasound in human body is 1540 m/s. A procedure is performed with a frequency of 2.57 MHz is used. To mon
The speed of ultrasound in human body is 1540 m/s. A procedureis performed with a frequency of 2.57 MHz is used. To monitorthe heart rate of a fetus, the maximum frequency shift is 100 Hz.The maximum speed of a vibrating heart is _____ cm/s.