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The water in a 25 m deep reservoir is kept inside by a 150 m wide wall whose cross section is an equilateral triangle. Determine a) the total force (hydrostatic + atmosphere) acting on inner surface of the wall and its line of action and b) the magnitude of the horizontal component of this force.
the national football league is holding superbowl 45 in the dallas cowboy stadium. one concern is the possibility of
a hydro-electric plant uses an 85 efficient turbine-generator to produce power from a reservoir with a height of 45 m
based on inernal energy considerations what dislocation density in cu is needed to make the crystalline form of cu
an air-conditioning unit takes in outside air at 46oc and 100 kpa having a relative humidity of 16. the air is cooled
the pressure at the bottom of a swimming pool is evenly distributed. suppose we look at a cast iron plate of 7272 kg
descriptive questions - give brief answers in words. no calculations are required. you may write your answers in point
Steam enters a diffuser at 20 psia and 240oF with a velocity of 900 ft/s and exits as saturated vapor at 240oF and 100 ft/s. The exit area of the diffuser is 1 ft2. Determine (a) the mass flow rate of steam and (b) the rate of entropy generation.
five kilograms of air at 300 k is contained in a vertical cylinder by a frictionless piston of a mass such that the
a 10 gram mass is attached to the end of a 2 meter string which is perfectly flexible infinitely strong and weightless.
a 50-cm by 50-cm plate of pure nickel generates 3.9 mwm3 of energy uniformly within the plate. all four sides of the
Consider a mass going through a polytropic process where pressure is directly proportional to volume (n=-1) the process starts with P=0,V=0 and ends with P=600kPa,V=0.01m^3. Find the boundary work done by the mass.
a projectile enters a resisting medium at x0 with an initial velocity of vo900fts and travels 4 inches before coming to
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