Solid Cylinder A long, nonconducting, solidcylinder of radius 4.9 cm has a nonuniformvolume charge density ρ that is a function of the radial distance r from the axis of the cylinder, as givenby ρ = Ar2, with A = 3.0 µC/m5.
a) What is the magnitude of the electric fieldat a radial distance of 3.9 cm from theaxis of the cylinder?
b) What is the magnitude of the electric field at a radial distance of 5.9 cm from the axis of the cylinder?