Charges q3 and q5 are now replaced by two charges, q2 and q6, having equal magnitude and sign (-3.4 μC). Charge q2 is located at the origin and charge q6 is located a distance d = d1 + d2 = 7.4 cm from the origin as shown. What is ΔPE, the change in potential energy now if charge q1 is moved from point P to point R? d2=2.1cm d1=5.3cm, q1=1.5microC