Hello I need help on question 12 (part b as I had gotten that part wrong), question 13, question 14, and question 15 (part b) Thank you so much!

12. [5/6 Points] DETAILS PREVIOUS ANSWERS SERPSE10 8.3.P.008. 2/6 Submissions Used MY NOTES ASK YOUR TEACHER A 40.0 kg box initially at rest is pushed 5.05 m along a rough, horizontal floor with a constant applied horizontal force of 145 N. If the coefficient of friction between box and floor is 0.300, find the following. (a) the work done by the applied force 732.25 J (b) the increase in internal energy in the box-floor system due to friction 117.6 X Your response differs from the correct answer by more than 10%. Double check your calculations. J (c) the work done by the normal force 0 'd) the work done by the gravitational force 0 (e) the change in kinetic energy of the box 137.764 (f) the final speed of the box 2.624 m/s Need Help? Read It Submit Answer 13. [-/1 Points] DETAILS SERPSE10 8.4.OP.013. 0/6 Submissions Used MY NOTES ASK YOUR TEACHER The coefficient of friction between the block of mass m, = 3.00 kg and the surface in the figure below is k = 0.280. The system starts from rest. What is the speed of the ball of mass my = 5.00 kg when it has fallen a distance h = 1.65 m? m/s my m2 i Need Help? Read It Watch It14. [1/4 Points] DETAILS PREVIOUS ANSWERS SERPSE10 8.4.OP.014.MI. 3/6 Submissions Used MY NOTES ASK YOUR TEACHER A 4.00-kg block is set into motion up an inclined plane with an initial speed of v; = 7.60 m/s (see figure below). The block comes to rest after traveling d = 3.00 m along the plane, which is inclined at an angle of 0 = 30.0 to the horizontal. (a) For this motion, determine the change in the block's kinetic energy. J (b) For this motion, determine the change in potential energy of the block-Earth system. (c) Determine the friction force exerted on the block (assumed to be constant). N (d) What is the coefficient of kinetic friction? Need Help? Read It Master It 15. [1/2 Points] DETAILS PREVIOUS ANSWERS SERPSE10 8.5.OP.016. 1/6 Submissions Used MY NOTES ASK YOUR TEACHER At a bottled water plant, water with a density of 1.00 g/ml passes through a pumping station where it is raised vertically by 5.77 m at the rate of 1,860,000 liters per day. The liquid enters and leaves the pumping station at the same speed and through pipes of equal diameter. (a) Determine the output mechanical power (in W) of the lift station. Ignore any energy loss due to friction. 1217.31 W (b) Assume an electric motor continuously operating with average power 3.70 KW runs the pump. Find its efficiency. 32.9 X Check the definition of efficiency. What is the difference between efficiency and percent efficiency? You may have determined the percent efficiency. Need Help? Read It