Consider two long, straight, horizontal wires that are oriented so that they are perpendicular to each other. The two wires are displaced vertically from each by 2.1 cm, so that, and at their closest, they are 2.1 cm apart. The top wire carries a current of 80 A, while the bottom one carries 64 A. How strong is the magnetic field (in T) at a point midway between the two wires, on the vertical line that connects the two points of closest approach?