(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

If the ultrasound pulses are 3.5 microseconds (is [tex]\mu[/tex] the right symbol for "micro"?) long, and travel 100mm in 70 micro seconds, what is the smallest distance one part of a baby can be behind another if the reflections can just be told apart (dont get mixed together in time).

2. Relevant equations

v = f x wavelength maybe?

3. The attempt at a solution

I couldnt find out how to do it in the textbook

can someone please explain the theory behind it, and possibly leave the calculation to me?

thnx

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# Homework Help: Quick wave question

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