Recent content by ProtonHarvest

DarthBane, you're right, it is Chapter 1.5, I've edited it. Thanks for the heads up.

From Partial Differential Equations: An Introduction, by Walter A. Strauss; Chapter 1.5, no.4 (b). Homework Statement "Consider the Neumann problem (delta) u = f(x,y,z) in D \frac{\partial u}{\partial n}=0 on bdy D." "(b) Use the divergence theorem and the PDE to show that...

Wouldn't the radial component be E_{x}, & depend only on y and x, since this is a strictly 2-dimensional problem? Using the hyperphysics site and the setup you see in the picture, I got: dE_{x} = \frac{\lambda xdy}{4\pi\epsilon r^{2}r} E_{x} =...

Homework Statement Two line charges of the same length L are parallel to each other and located in the xy plane. They each have the same linear charge density λ=constant. Find the total force on II due to I. Homework Equations F =QE Q = \lambdaL E = ? This is where I'm stuck. The...