A certain pipe produces a fundamental frequency of f in air.(adsbygoogle = window.adsbygoogle || []).push({});

If the pipe is filled with helium at the same temperature, what fundamental frequency does it produce?

I assume that I just take (f/v1)(v2), with v1 being speed in air and v2 being speed in helium

this lead me to the equation:

(f*sqrt(M_air))/sqrt(M_He)

However, this is somehow off by a multiplicative factor. I can, however, find no way in which any other factor would be involved...

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# Homework Help: Sound moving through different mediums

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