please answer both questions. tye options for questions 10 are A. I, iiiB. I, iic. I, ii, iiid, ii,iiie. I

10. A simple pendulum is depicted in the figure below. The ball is released from Point A and pushed down and right (tangent to the path) with a speed of 3 m/s. It then travels to points B, where it passes a frictional surface, and then to point C before reaching the highest point on the right, which is D. Points A and D in the figure are at the same height. Which of the following statement(s) is true? 1. If the system is the pendulum, Earth, and frictional surface, no work is done on the system. 11. The kinetic energy at point A and D are the same. 111. The total mechanical energy of the system at point A is equal to the total mechanical energy of the system at point C. B. 1, 1/ -.. ... 3 m/s A. I, III B. 1, II 6. A 0.500 kg thin aluminum rod at 15.0 .C is placed into 10.0 kg of mineral oil at 300.0 .C. The specific heat for aluminum is 900.0 - and the specific heat for mineral oil is 2100- If the rod is initially 0.500 m long and is completely submerged in the mineral oil, what will be the rod's length once the aluminum and the oil are in equilibrium? Assume the rod is 1-dimensional with a thermal expansion coefficient of 25.0 x 10-6 . C-1. A. 0.497 m B. 0.003 m C. 0.506 m D. 0.500 m E. 0.503 m