Two steel rods 1.2500m long each are solidly clamped together at one end by insulating blocks so that they are separated by 2.5000 cm. The free ends have slack wires clipped to them so that the current is carried away in a direction that will not affect the force exerted by the rods on each other. If the rods have cross-sectional areas of 4.0000 x 10-6 m2 and steel has a shear modulus of 79.500 MPa, what identical current through the rods will force them to touch?