answer questions 13,14,16,17,18

13. [0/2 Points] DETAILS PREVIOUS ANSWERS OBINPHYS8 4.P.028. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER A boat (with a flat bottom) and its cargo weigh 5,800 N. The area of the boat's bottom is 7 m . How far below the surface of the water is the boat's bottom when it is floating in water? X m Need Help? Read It Submit Answer 14. [-/2 Points] DETAILS OBINPHYS8 4.P.029. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER A scale reads 150 N when a piece of copper is hanging from it. What does it read (in N) when it is lowered so that the copper is submerged in water? Need Help? Read It Submit Answer 15. [2/2 Points] DETAILS PREVIOUS ANSWERS OBINPHYS8 4.P.030. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER A rectangular block of ice with dimensions 2 m by 2 m by 0.2 m floats on water. A person weighing 990 N wants to stand on the ice. Would the ice sink below the surface of the water? Yes O No Need Help? Read It Submit Answer 16. [-/2 Points] DETAILS OBINPHYS8 4.P.031. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER A dentist's chair with a person in it weighs 1950 N. The output plunger of a hydraulic system starts to lift the chair when the dental assistant's foot exerts a force of 49 N on the input piston. Neglecting any difference in the heights of the piston and the plunger, what is the ratio of the area of the plunger to the area of the piston? A plunger = Apiston Need Help? Read It Submit Answer 17. [-/2 Points] DETAILS OBINPHYS8 4.P.033. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER The wing of an airplane has an average cross-sectional area of 13 m" and experiences a lift force of 62,000 N. What is the average difference in the air pressure between the top and bottom of the wing? N/m Need Help? Read It Submit Answer 18. [-/2 Points] DETAILS OBINPHYS8 4.P.035. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER Air flows through a heating duct with a square cross-section with 9-inch sides at a speed of 6.1 ft/s. Just before reaching an outlet in the floor of a room, the duct widens to assume a square cross-section with sides equal to 14 inches. Compute the speed of the air flowing into the room (in ft/s), assuming that we can treat the air as an incompressible fluid. ft/s Need Help? Read It