Recent content by lidl

ok, now I got the following: Q=integral of /rho(1-r/R) times rdr d/phi dl Which is the answer for the question of what's the charge of the cylinder L. How to calculate it?

please delete this post

This is from the test, as you can see, and everything I knew was written down...

Here's link to my paper: http://img202.imageshack.us/img202/5889/physics.jpg

anyone? :(

http://img404.imageshack.us/img404/4148/gauss3j.png (infinitly long) \Phi=\Phi_{0}(1-{r \over R}) {C \over m^2} What's the charge of the cylinder of length L? Again, almost everything was wrong...

sorry for this R! mistake. now i am looking only for the electric potential (sigma) at the point P!

http://www.twiddla.com/188165 R and Q are given E(P)=? phi(P)=? The Attempt at a Solution Homework Statement Homework Equations I have no idea. I managed to do phi=E*2pi*r*h