# Force Exerted by Individual Molecules

1. Apr 15, 2005

### vworange

I have absolutely no idea how to do this question. I've tried several different ways.. tried using the equation:
$P = (1/3)*(N/V)*2*((3/2)kT)$

Then using the idea that:
$P = F/A$

No luck. I think I'm doing things wrong. Does this have something to do with internal energy? ($U = (3/2)nRT$)

2. Apr 15, 2005

### learningphysics

First find the pressure P using PV=nRT.

Now find the partial pressure due to a single molecule, p=P/(total number of molecules)

Now you can calculate the force due to a single molecule on the walls using p=f/A =>f=pA