Two parallel rods are each 0.68 m in length. They are attached at their centers to a spring that is initially neither stretched nor compressed. The spring has a spring constant of 150 N/m. When 1200 A of current is in each rod in the same direction, the spring is observed to be compressed by 1.9 cm. Treat the rods as long, straight wires and find the separation between them when the current is present. Number Units m