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If the velocity of blood flow in the aorta is about (0.32 m/s), what is the pulse frequency you
would expect if ultrasound waves with a frequency of (4.3 MHz) were directed along the blood flow and
reflected from the red blood cells? Suppose waves travel at a speed of 103x1.54 m/s.
17.88 KHz
178.80 Hz
O 1.788 KHZ
O 0.178 KHz
O 17.88 Hz

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