Three long, straight wires are seen end-on in the figure below. The distance between the wires is r = 0.266 m. Wires A and B carry current I, = Iz = 1.78 A, and wire C carries current I- = 3.06 A. Assume (for example) the only forces exerted on wire A are due to wires B and C. Find the force per unit length exerted on the following. (Express your answers in vector form.) A ) y / \\\\ \\ \\NT b B x s (a) wire A FA = N/m (b) wire B FB = N/m