Two boxes connected by a light horizontal rope are on a horizontal surface. The coefficient of kinetic friction between each box and the surface is 0.30. One box (box B ) has mass 4.72 kg, and the other box (box A) has mass m. A force with magnitude 40.6 N and direction 53.1 degrees above the horizontal is applied to the 4.72 kg box, and both boxes move to the right with 1.50 m/s^2. What is the tension in the rope that connects the boxes? what is the mass m of the second box?