1. The problem statement, all variables and given/known data An infinite line of charge with linear density λ1 = 6.8 μC/m is positioned along the axis of a thick insulating shell of inner radius a = 2.5 cm and outer radius b = 4.8 cm. The insulating shell is uniformly charged with a volume density of ρ = -667 μC/m3. 1) What is λ2, the linear charge density of the insulating shell? -3.518247622μC/m 2) What is Ex(P), the value of the x-component of the electric field at point P, located a distance 8.1 cm along the y-axis from the line of charge? 0 N/C 3) What is Ey(P), the value of the y-component of the electric field at point P, located a distance 8.1 cm along the y-axis from the line of charge? This is where I'm stuck. 2. Relevant equations Gauss' law ∫E⋅dA=Q_enc/∈ I know there will be integrations in there but due to a week of snow days the instructor hasn't covered any of that, so I'm not sure if there is something else I'm missing, and I'm not finding any good material that I can extract something from. 3. The attempt at a solution The first section to the homework was similar, but with a conducting shell. I figured that out with the help of Michael Van Biezen videos, but I don't get how to use charge densities, or how to integrate what. E∫(πR2)L = ∫dQ/∈ (I'm using ∈ for epsilon naught) dQ=λdV dV=∫(from a-b)πL(Ra2-Rb2) dQ=λπL∫(Ra2-Rb2) EπR2 = (λπL∫(Ra[/SUB2]-Rb2))/∈ E = (λL∫ab(Ra2-Rb2))/R∈ That's what I have written on my paper. I'm just totally lost and desperate at this point. Like I said my teacher is expecting way too much without much instruction, and I'm sorry for short comings, but I just really need help. Thanks!