Two long, straight, conducting wires are both perpendicular to the xyxy-plane. Wire 1 passes through the point xx = 0, yy = 1.00 cmcm, zz = 0 and carries current 1.00 AA in the +zz-direction. Wire 2 passes through the point xx = 0, y = -1.00 cmcm, zz = 0 and carries current 4.00 AA also in the +zz-direction. Find the net magnetic field due to both wires at xx = 0, yy = 0, zz = 0.