The Ögure shows a piping system. Water áows upward and to the right (from A to B) in the 4-inch-diameter pipe. The pipe exits to
the atmosphere at B. There is a clamp at point A that holds the pipe in place. Point B is 10 feet above and 10 feet to the right of point A. Note that patm = 2116 lb/ft2 and H2O = 1:94 slugs/ft3 . Figure for problem 5. (a) A meter at point A reads VA = 20 ft/s. Find the velocity at B and the pressure at A if viscous e§ects can be neglected. (b) For the same meter reading as in (a), Önd the velodity at B and the pressure at A if viscous e§ects cannot be neglected. (You may approximate pipe lengths based on the information given.) The pipe is galvanized iron with a standard roughness height of 0.0005 ft. (c) Find the reaction force due to the water áow at the clamp at point A assuming there is no other support for the pipe. Use the partial results from (b) to Önd the force. (You may neglect the weight of the pipe.)
A tsunami's trough, the low point beneath the wave's crest, often reaches shore first. When it does, it produces a vacuum effect that sucks coastal water seaward and exposes harbor and sea floors. As the tsunami approaches water is drawn back from the beach to effectively help feed the wave. In a tide the wave is so long that this happens slowly, over a few hours.
