3. (10 Points) Two point charges are arranged on the y-axis as follows: ql : 6{Z) ,LLC' at. y : +6 em; {12 : +60 pf} at y : 6 cm. a) Find the electric field at a point P :r: = 12 mm: y = {) em. h) If a third charge (13 = 4{),uC is placed at point P that has a 1112155 of 200 g, what amaeltu'atien would it feel