Two point charges are placed on the x-axis. The first charge,q1 = 8.00 nC, is placed a distance 16.0 m from the origin along the positive x-axis; the second charge, q2 = 6.00 nC, is placed a distance 9.00 m from the origin along the negativex-axis.
An unknown additional charge q3 is now placed at point B, located at coordinates (0 m, 15.0 m).
Find the magnitude and sign of q3 required to make the total electric field at point A equal to zero.