A hairpin configuration is formed of two semiinfinite straight wires that are 3.42 cm apart and joined by a semicircular piece of wire (whose radius must be 1.71 cm and whose center is at the origin of xyz-coordinates). The top straight wire is along the line y = 1.71 cm, and the bottom straight wire is along the line y = -1.71 cm; these two wires are in the left side (x < 0) of the xy-plane. The current in the hairpin is 5.43 A, and it is directed toward the right in the top wire, clockwise around the semicircle, and to the left in the bottom wire. Find the magnetic field at the origin of the coordinate system.