Sketch the field lines outside the larger sphere (at 12, 3, 6, and 9 o'clock). Where are they perpendicular to the sphere's surface? Give the expression for E(F) in this region. Hint: Be very careful with your vectors! Your answer should be in terms of r, f, and 2, and any needed constants (consider the center of the larger sphere to be the origin so the position vector to the point of interest r = rf; whereas ż points upwards so the position vector connecting the centers of the two spheres is given bi) (b) Find the electric field at every point inside the larger sphere