1.Three feet of flash boards were placed on the top of a small diversion dam. The pipes holding the boards were placed 10 ft apart across the dam. There were 20 pipes and each one was designed to fail under a bending moment of 1625 ft-lb how deep will the water be on the flash boards when failure occurs? Assume hydrostatic pressure distribution on the flash boards.
2.two steel spheres 100mm in diameter. Compute gravitational force and the force of mutual attraction F in newtons. the specific weight of steel is 0.284 lb/in^3
3.A piston-cylinder assembly containing 1/4 kg of a gas undergoes a constant pressure process at 5 bar beginning with a specific volume of 20 m^3/kg. for the gas in the system the work is -15 kj. determine the final volume of the gas in m^3
4.At what water depth would a semi-diurnal tidal wave (T = 12.4 hrs) cease being a shallow water wave and become a transitional wave?