Ultrasound reflected from an oncoming bloodstream that is moving at 31 cm/s is mixed with the original frequency of 1.3 MHz to produce beats. What is the beat frequency? (Velocity of sound in blood = 1540 m/s.)(adsbygoogle = window.adsbygoogle || []).push({});

I know that there are two doppler shifts; one where the source is fixed and the other where the observer is fixed.

So i'm supposed to use the doppler shift equation to solve for this:

f1=f((V + Vo) / (V - Vs))

but I dont know what numbers to plug into which variables.

After I find the frequency of the doppler shifted echo all I have to do is subtract it from the original frequency of 1.3 MHz, right?

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# Homework Help: Ultrasound reflected from an oncoming bloodstream

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