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In constructing dams, the concrete is poured in lifts of approximately 1.5 m (y1 = 1.5 m). The forms for theface of the dam are reused from one lift to the next. The figure shows one such form, which is bolted tothe already cured concrete. For the new pour, what moment will occur at the base of the form per meter oflength (normal to the page)? Assume that concrete acts as a liquid when it is first poured and has a specific weight of 24 kN/m3.
A cylindrical aluminium rod 0.02 m in diameter and 1 m length is taken out of an oven at 150oC and cooled in a 3 m/s cross flow of air at 23oC. Calculate the average convective heat transfer coefficient. Use a correlation that uses properties at film..
The slender uniform homogeneous rods AB and BC weigh 16.1-lb and 32.2-1b, respectively. Block C weighs 64.4-lb and moves in the slot as shown. Rod AB has a constant angular velocity of 2radis (counterclockwise). Find the kinetic energy of the syst..
What is the acceleration of the truck if the coupling at C suddenly fails? The car wheels are free to roll. Neglect the mass of the wheels.
A 25-kg block of copper at at initial temperature of 150 C equilibrates with 0.79 kg of liquid water at an initial temperature of 20 C in an insulated tank. If the average specific heat of copper can be taken to be 0.395 kJ/kg.K, determine the final ..
a base for a building column measures 18.0 in by 18.0 in on a side and 12.0 in high. compute the cross-sectional area
a steam turbine at steady state is operated at part load by throttling the steam to a lower pressure before it enters
A building frame is modeled by four identical steel columns, each of weight w, and a rigid floor of weight W, as shown in Fig. 2.79. The columns are fixed at the ground and have a bending rigidity of EI each.
Compute all the stationary spot price equilibria, (x0 , x1, P , r , G, T), in which P = r = 1.
as given in the sketch kerosene at 90f is being drained through 100 feet of 4 inch schedule 80 pipe from a storage tank
if a coal-burning electrical generating plant burns 2 tons of coal to generate 6000 kwh of electricity calculate the
in a system a lever needs and effort of 200n to lift a load of 350n. the end of the lever arm moves 50cm and the load
A short post AB has a commercially manufactured eyebolt screwed into its end. Three cables attahced to the eyebolt apply forces shown.
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