The Doppler shift of ultrasonic waves can measure the speed of blood in an artery.If the frequency of the stationary source is 95 kHz and the reflected sound has a Doppler shift of 150 Hz,what is the blood flow speed? (The speed of sound inside the body is 1 500 m/s. )
A) 1 m/s
B) 1.2 m/s
C) 2.4 m/s
D) 3.6 m/s
E) 5.3 m/s
Correct Answer:
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