a 10-cmcm-long thin glass rod uniformly charged to 7.00 ncnc and a 10-cmcm-long thin plastic rod uniformly charged to -7.00 ncnc are placed side by side, 4.40 cmcm apart. what are the electric field strengths e1e1 to e3e3 at distances 1.0 cmcm, 2.0 cmcm, and 3.0 cmcm, from the glass rod along the line connecting the midpoints of the two rods?