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

No specific question, I'm a greenhand to waves, so when it came to sound cavity, I was just confused how the teacher(in the video lecture,I'm not a physics major) can distinguish which side is a node and which is an anti-node, it seems too fast for me, could anyone give me a hand?

Like give p(z,t)=(Acos(kz)+Bsin(kz))cos(wt), inside a 1 end open,1 end closed cylinder cavity, the teacher just assumed a new variable, sayq, referring to the deviation of air molecules, and I just didn't know what p stands for ? I supposed that p was for the deviation of air molecules before q jumps out >_<

2. Relevant equations

The 1 dim wave equation? I'm afraid I'm totally confused what x in [itex]\frac{\partial x^2}{{\partial}^2 z}=\frac{\partial x^2}{v^2 {\partial}^2 t}[/itex] refers to.

3. The attempt at a solution

Not yet quite understand anything >_<

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# How to distinguish node and anti-node for a 1 end closed,1 end open cavity for sound?

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