Recent content by katrascythe

Homework Statement A Wheatstone Bridge with 5 resistors http://img529.imageshack.us/my.php?image=physicsproblemmo7.png Homework Equations Use Kirchoff's Law The Attempt at a Solution I know that I have to use Kirchoff's laws to find the current at each junction and then at the...

I was able to get the equation through a few equations we have in our notes. Gauss' Law is phi = Q/epsilon_0. The magnitude within each sphere would be constant, so phi is the integral of E*ds. That gives 4*pi*r^2*E. Setting the equations equal to each other is 4*pi*r^2*E = Q/epsilon_0...

Gauss' law can be used for cylindrical, spherical, and planar symmetry. So here there is spherical symmetry. Looking this up gives me the equation of E = (QA)/(4*pi*epsilon_o*r^2)

Yes, we've learned Gauss' law but I'm unsure how to apply it to the problem. Due to the surface charge sigma wouldn't the equation be (2*pi*(radius)^2*sigma)/epsilon?

Homework Statement I have a solid, insulating, finite-thickness spherical shell (inner radius a, outer radius b). It's uniformly charged with a total charge of Q. I'm looking for the electric field E, "everywhere in space, including points outside and inside the spherical shell" Also...