QUESTION 13 Water is flowing through a 6.00-cm-radius pipe at a speed of 2.00 m/s when the pipe widens to a radius of 8.00 cm. At what speed does the water flow through the wider section of the pipe? a. 3.05 m/s b.2.34 m/s OC. 1.12 m/s d.0.835 m/s e. 0.441 m/s

8. A piece of copper has a mass of 2.6 kg. a. What is the volume of this piece of copper?b. The copper is then totally submerged in water. What is the buoyant force acting on it? c. What is the piece of copper’s apparent weight in the water?

A D1 = 0.80 in D2 = 0,04 in A syringe in the figure contains fluid of s.g. 1.05. If the plunger is pushed in steadily at 0.125 in/s, what is the exit velocity. Assume no leakage past the plunger. * 0.0317 ft/s 0.0417 ft/s 0.0517 ft/s O 0.0617 ft/s 5 If the velocity in a 12-in diameter pipe is 1.60 ft./s, what is the velocity in a 2.5-in diameter jet issuing from a nozzle attached to the pipe? * 7.805 m/s 0.7805 m/s 78.05 m/s 0.07805 m/s

9. A new water fountain has been installed outside of city hall. It is powered via a water tower that has its water level at a height of 14 m. Before the fountain is ceremonially turned on the pipe leading to the central fountain is closed. Assume that the water tower is wide enough that the level of the water does not drop significantly when the fountain is in use and that the tower is open to the air. a. What is the pressure in the pipe at the base of the fountain before it is opened?b. After the fountain is opened what is the speed of the water as it leaves the central pipe?c. How high will the water from the water fountain reach before falling back to the ground?