Three charged particles oi'q1 = 30.0 nC, q2 = 30.0 nC, and q3 = 15.0 nC are placed on the y-axis, as shown in the gure. .1' (1.3 '1'. (I +33'l (1.! 0) Charge :71 has the coordinates (0, 8.00 cm), q2 has the coordinates (0, 8.00 cm), and :13 is located at the origin. (a) Find the electric potential energy (in J) of the configuration of the three xed charges. 5.06256-5 / J (b) A fourth particle, with a mass of 1.50 x 10'13 kg and a charge of q4 = 60.0 nC, is released from rest at the point (6.00 cm, 0). Find its speed (in m/s) after it has moved Freely to a very large distance away. 2.594 x