A rectangular loop of current-carrying wire sits above a long, straight, current-carrying wire. The rectangular loop has a current running clockwise, and the long, straight wire has a current running to the left, as shown in Figure 4. (8.3) G Figure 4 (a) Determine the direction of the magnetic force on each of the four sides of the rectangular loop. (b) Determine the direction of the net force on the rectangular loop of wire. Justify your answer.