yeah, I posted exactly what the problem was asking. and I tried to put the picture in, but I guess it didn't work. Its a spherical shell. I just don't know how to find the linear charge density for something that isn't linear
Homework Statement
An infinite line of charge with linear density λ = 7.5 μC/m is positioned along the axis of a thick insulating shell of inner radius a = 2.9 cm and outer radius b = 4.9 cm. The insulating shell is uniformly charged with a volume density of ρ = -612 μC/m3.
What is λ2...