A long, nonconducting, solid cylinder of radius 5.7 cm has a nonuniform volume charge density ρ that is a function of radial distance r from the cylinder axis: ρ = Ar2. For A = 2.7 μC/m5, what is the magnitude of the electric field at (a) r = 1.6 cm and (b) r = 9.5 cm. (a) Number Units (b) Number Units