2. The space between the plates of a parallel-plate capacitor is lled with two slabs of linear dielectric material. Each slab has thickness d, so the total distance between the plates is 2d. The upper slab has a dielectric constant (.5?) of 2, and the lower slab has a dielectric constant of 1.5. The free surface charge density on the top plate is a and on the bottom plate it is 0'. (a) Find the electric displacement D in each slab. (b) Find the electric eld E in each slab. (c) Find the polarization P in each slab. (d) Find the potential between the plates. ) (e Find the location and amount of all bound charge