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A road sign consists of a steel post AB that has an outer diameter of 16 in., a wall thickness of 0.75 in., and a length of 25 ft. The pole BC has an outer diameter of 12 in., a wall thickness of 0.625 in., and a length of 40 ft to the center of the sign. The sign is 15 ft wide by 10 ft high and is subjected to a wind pressure of 0.2 psi. Determine the largest stresses in the vertical post AB due to the wind pressure, and draw Mohr's circle for that stress state.
(1) a constant wind velocity that is twice the mean wind velocity and operating half the time; and (2) a constant wind velocity that is three times the mean wind velocity operating one-third of the time.
The plate is submerged in a liquid is a vertical position with the parallel sides horizontal and the shorter parallel side at the top and exactly in the surface of the liquid.
A steel bolt and nut are tightened around an aluminum sleeve. Find the internal forces as the nut is rotated 1 turn
Gaseous oxygen (99% pure, molar basis) is to be produced at a rate of 350ft^3/hr in a Linde single column plant. The column operates at a pressure of 1 atm. Air leaves the compressor at a pressure of 10 atm.
A flow of 0.1 cum/s flows down in a rectangular channel of width of 0.6m and having and adjustable bottom slope. If chezys constant C is 56, determine the bottom slope necessary for uniform flow with a depth of flow 0.3m. Also find the conveyance of ..
A cylindrical metal specimen 12.0 mm in diameter and 120 mm long is to be subjected to a tensile stress of 40 MPa . at this stress level the resulting deformation is totally elastic.
Truck B has an 8000-lb single axle and a 43,000-lb tandem axle. On a flexible pavement with a 3-inch hot-mix asphalt (HMA) wearing surface, a 6-inch soil-cement base, and an 8-inch crushed stone subbase, which truck will cause more pavement damage
For the beam and loading shown, write the equation of he shear and bending-moment curves and determine the magnitude and location of the maximum bending moment
What is the diameter of a circular concrete column needed to support a load of 300,000 pounds with a factor of safety of 2? Round the diameter up to the whole inch. The concrete ultimate strength is 3000 lb/in^2.
The pressure inside a 4 cm hose is 700 kPa. If the water exits through a 2 cm diameter nozzle, what velocity in m/s, can be expected inside the hose ?
The initial velocity of a 15-lb block is given as mv1=15i+15j (ft/s). A force defined by F=250i-250tj (lb) acts on the particle from time t=0 to time t=0.3 s for a total duration of 0.3 s. Determine the particle’s velocity at t=1 s. Neglect friction.
Terry wants to purchase a used car for $8000. The dealer offered to finance the deal at 8.5% APR for 4 years with 10% down payment. Terry's bank will provide a loan at 7.8% for 3 years, but wants a 20% downpayment.
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