Two 0.78-m-long conducting rods are rotating at the same speed in opposite directions, and both are perpendicular to a 4.0-T magnetic field. As the drawing shows, the ends of these rods come to within1.0 mm of each other as they rotate. Furthermore, the fixed ends about which the rods are rotating are connected with a wire, so these ends are at the similar electric potential. If a potential difference of5.6 x 103 V is required to reason a 1.0-mm spark in air, what is the angular speed (in rad/s) of the rods when a spark jumps across the gap?