Two boxes connected by a cord. Two boxes, Aand B, are connected by a lightweight cord and are resting on a smooth (frictionless) table. The boxes have masses of 12.0 kg and 10.0 kg. A horizontal force pF of 40.0 Nsi applied ot the 10.0-kg box, sa shown ni Fig. 4-22a. Find (a) the acceleration of each box, and (b) the tension in the cord connecting the boxes.