"The long wires lie in an xy plane, and each carries a current in the positive direction of the x axis. Wire 1 is at y=10.0 cm and carries 6.00 A; wire 2 is at y=5.00 cm and carries 10.0 A.(a) In unit-vector notation, what is the net magnetic field B at the origin? (b) At what value of y does B = 0? (c) If the current in the wire 1 is reserved, at what value of y does B = 0?"