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You are given a sheet of steel with a modulus of rigidity is G = 80.8 Gpa, a length L = 1 m, width w = 100 mm, and thickness t = 1 mm. You are asked to design a shaft cross-section by shaping the given steel sheet. The machine that is available to you can shape the sheet metal into three different sections i) an open-circle, ii) a closed-square, iii) a closed-circle. (a) Calculate the stress and deflection in each design if the only load the shaft will undergo is a 10 N-m torque. (b) As the designer which cross-section would you pick for fabrication and why?
You need to hydrolyze 500 lb/day of an ester at an initial concentration of 5 molar in basic, aqueous solution. The ester has a MW of 120. The product must be 99% hydrolyzed. In bench top experiments at 40C, it is found that 50% of the ester hydrolyz..
Air is contained in a piston-cylinder assembly, initially at 40 psia and 600 R. The air expands in a polytropic process with n = k = 1.4 until the volume is doubled. Modelling the air as an ideal gas with constant specific heats,
A sheet of epoxy reinforced with 60% unidirectional E-glass fibers, where x is the fiber direction. Strains ex= 0.0030, ey=-0.0020, and yxy = .0025 are measured. Estimate the applied stress ox, oy, txy
How can be determined the dynamic parameters of a second order system, wiht an Inertia (M), a dampening coeficient ( C ) and a Stiffness constant ( K).
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a container of air with a fixed volume of 1 ft3develops a slow leak. the container originally is at 900 degrees at
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A large oil reservoir has a pipe of 4 in ID and 7000-ft length connected to it. The free surface of oil (kinematic viscosity = 1 x 10^4 ft2/s) in reservoir is 10 ft above the centerline of the pipe and can be assumed to remain at this fixed elevation..
a container initially at 323 k is heated to a final temperature of 573 k. if the device contains a mixture of nitrogen
at the beginning of the compression stroke the volume of a certain diesel engine cylin-der is 1.000 liter and it is
a heater is required to supply the domestic hot water dhw in a 50 unit apartment building where the dhw load is
water is transferred at a rate of 2.1 cfs from an upper reservoir to a lower reservoir by a concrete pipe 3000 ft long.
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