An infinite line of charge with linear density λ = 7.6 μC/m is positioned along the axis of a thick insulating shell of inner radius a = 3 cm and outer radius b = 5 cm. The insulating shell is uniformly charged with a volume density of ρ = -611 μC/m3. (see attachment) What is Ex(R), the value of the x-component of the electric field at point R, located a distance 1.5 cm along a line that makes an angle of 30o with the x-axis? What is Ey(R), the value of the y-component of the electric field at point R, located a distance 1.5 cm along a line that makes an angle of 30o with the x-axis? So I need to find E. Initially I used this equation: E= 1/ (4*pi* eo) * (λ/ r) *[either cos/sin counting on which one you're solving for] where λ = 7.6*10^-6 and r= .015m The units seem to make sense (comes out to be N/C) but when I get an answer (3945479 for E x-comp) its wrong. Any help please? I'm not really that educated about gauss's law so im not sure what else to do.