Two long straight wires are carrying current out of this page. Make the plane of this paper the x-y plane, and put one wire at the origin with 5 A., the other wire at (2m, 0) with 4 A. Draw this below. Find the magnetic field at the point (-1m, 0). If a wire with current into the page of 3A. is placed at (-1m, 0), find the force per unit length on that wire.