Acharged insulating sphere radius of b has a non-constant volume charge density of ρ = -6αr -1. find the electric field magnitude in each region in terms of α (outside the object and inside the inside the object). sketch a graph of the electric field magnitude as a function of radius for r = 0 to r = 2b. make sure it is roughly to scale and label the magnitude of the field at r = b and 2b. then find the electric potential in each region in terms of α, and sketch a graph of the electric potential as a function of radius for r = 0 to r = 2b. make sure it is roughly to scale and label the potential at r = 0, b, and 2b. your reference point for the potential is that v = 0 at r = ∞.