Recent content by Xelotath

So I have: E=\int\int \frac{k\sigma h}{(L^2+W^2+h^2)^\frac{3}{2}}dwdl after the inner integration with bounds -w/2 to w/2 I get E=\int \frac{2hkw\sigma}{(h^2+L^2)^\frac{3}{2}\sqrt{w^2+4}}dl Thus E=\frac{2kwL\sigma}{h\sqrt{(w^2+4)(L^2+h^2}} This still seems wrong Because by calculations...

Yes I am using the symmetry argument to say that the resultant E-field is only in the direction normal to the surface of the rectangle at point P, as all the other directions cancel out. I am not using a spherical reference coordinate system. The sin(theta) and sin(phi) are to find the...

The Problem is finding the E-field at a point P that is h distance from the center of a rectangle (along a line normal to its surface) with Length L and width W with a constant charge density sigma. This is for an intro E&M class that is supposed to use up through calculus 2, and we have not...