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The figure shows a steel pressure cylinder of diameter 4 in which uses six SAE grade 5 steel bolts having a grip of 12 in. These bolts have a proof strength (see Chap. 8) of 85 kpsi for this size of bolt. Suppose the bolts are tightened to 90 percent of this strength in accordance with some recommendations.
(a) Find the tensile stress in the bolts and the compressive stress in the cylinder walls.
(b) Repeat part (a), but assume now that a fluid under a pressure of 600 psi is introduced into the cylinder.
a 960 N.m moment is required to straghten a post. if the capacity of a winch puller is 2400N, determine the minimum value to create the specified moment.
Estimate (a) the wing span, (b) the aspect ratio, and (c) the induced drag. Take density of air to be 0.7 Kg/m3. Assume that the factors for induced drag and the lift slope, d and t, respectively, are equal to 0.01; i.e., d = t = 0.01.
Define and give the dimensions of thermal conductivity k, thermal diffusivity a,heat capacity C, heat flux q, and combined energy flux e. For the dimensions use m = mass, I = length, T = temperature, and t = time.
a weighted piston maintains the pressure of a piston cylinder at 200 psia. initially the system contains no mass. a
Estimate the potential problems with a plant effluent that contains a pesticide with an LC50 for fish of 0.01 mg/L at concentrations exceeding 0.01 mg/L, and if the exposed fish have tissue concentrations of 30 mg/kg.
Typical towns in states with big plains like Texas need an elevated tank to supply tap water. Below there is a picture of a typical elevated tank. If we approximate the tank as a cylinder with a diameter of 50 ft and a height of 25 ft, answer the fol..
Pentane (C5H12) burns with air so that a fraction x of the carbon is converted to CO2. The remaining carbon appears as CO. There is no free O2 in the products. Develop plots of the air-fuel ratio and the percent of theoretical air versus x, for x ran..
an air compressor takes air from outdoors at 28deg c and 101.2kpa and compresses it to 790kpa and 50 deg c. the air
Comment on the difference between the exergy destruction values. (a) The process is brought about adiabatically by stirring the mixture with a paddle wheel.
compressor air enters 100 kpa and 17c and exits compressor 600 kpa and 167c. mass flow rate of air is 2 kgmin amp power
For the loader shown in Figure 2.3, assume that rods 5 and 6 move during the same time interval (synchronized motion), but their velocities may be different.
the aerodynamic resistance to motion of a car is nearly proportional to the square of its velocity. additional friction
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