For Problems 9-14: Two blocks are connected by a massless cord and frictionless pulley as shown below. The 3.3-kg block is placed on a surface with friction. The 3.0-kg block moves 13 cm to the right. 9. How much work is done by the normal force exerted by the surface on the 3.0-kg block? a. 8.0] b. 7'34] c. 7.3] d. 0 I 10. The change in potential energy of the BAD-kg block before and after the motion is: a. 734] b. 7.34] c. D I d. -7.34 ] 11. The change in potential energy of the 6-0'kg block before and after the motion is: a. 5.33] b. -5.33 ] c. 533] d. -533] SHOW YOUR COMPLETE SOLUTION AND WRITE YOUR SOLUTION ON A PAPER12. The velocity of the 6.0-kg block after moving 10 cm is: a. 1.4 m/s2 to the left b. 1.4 m/s2 to the right c. 44 m/s2 to the left d. 44 m/s to the right e. None of the above