Imagine that there is a concluding bar of length L that is dragged at constant velocity along two conducting rails that are immersed in a uniform magnetic field of magnitude 8, directed into the page as drawn. Resistances of value 2K and SR are present at the end of the rails. (a) Find the force needed to sustain a constant velocity. What is the direction of the applied force? (b) State the direction, clockwise or counterclockwise, of the current In the left hand and Liglg hand loops