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Puchinita5
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Homework Statement
A sound wave of the form s = sm cos(kx - ωt + φ) travels at 347 m/s through air in a long horizontal tube. At one instant, air molecule A at x = 2.04 m is at its maximum positive displacement of 6.40 nm and air molecule B at x = 2.08 m is at a positive displacement of 2.10 nm. All the molecules between A and B are at intermediate displacements. What is the frequency of the wave?
Homework Equations
The Attempt at a Solution
uhhh I'm pretty much confused from the get go...i'm not sure how air molecules interact with a wave? i might need to be spoon fed a little here, because i don't even know where to start! ANY HINTS GREATLY APPRECIATED :)