Problem 9: An innitely long cylinder has a linear charge density '1 =2. WC/ m . Part (a) If the cylinder is insulating and has a radius R = 0.25 m, what is the volume charge density, in microcoulombs per cubic meter? Assume the charge density is uniform. Numeric : A numeric value is expected and not an expression. p = Part (b) If instead the cylinder were a conductor with the same dimensions and linear charge density, what would be the surface charge density, in microcoulombs per square meter? Numeric : A numeric value is expected and not an expression. a =