Chapter 18, Problem 18.59P

CP A large tank of water has a hose connected to it (Fig. P18.59). The tank is sealed at the top and has compressed air between the water surface and the top. When the water height h has the value 3.50 m, the absolute pressure p of the compressed air is 4.20 × 10⁵ Pa. Assume that I he air above the water expands at constant temperature, and take the atmospheric pressure to be 1.00 × 10⁵ Pa. (a) What is the speed with which water flows out of the hose when h = 3.50 m? (b) As water flows out of the tank, h decreases. Calculate the speed of flow for h = 3.00 m and for h = 2.00 m. (c) At what value of h does the flow stop?

Figure P18.59