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1.A high-strength steel simply supported W24 X 76 beam carries a uniformly distributed load over its entire length of 25 ft. (a) If the allowable stress is 33 ksi, what may be the value of the load, in addition to the beam's own weight? (b) what is the maximum deflection of the beam under the load?
2.A 30ft long steel rod of circular cross section is used at construction site. the tensile load on the rod will be 20kips. the maximum elongation allowed is to be 1/4". allowable tensile stress is 24 ksi. select the appropriate diameter of the rod for the construction.
3.Two parallel plates are separate at a distance of 2mm by a fluid. If a shearing stress of 150 Pa is developed at the upper plate when it is pulled at a velocity of 1m/s. Determine the viscosity of the fluid.
4.Assume that installing a solar array for on-site energy generation costs $50,000 now. How much needs to be saved on annual energy bills to recover the cost of the system in 5 years? Assume an annual interest rate of 7 percent.
Locate the image using both the spherical mirror equation and a ray diagram and identify if it is real or virtual, upright or inverted, and smaller or larger.
A chemical mixing basin is to be designed to blend chlorine and treated wastewater. The basin flow is 700 gallons per minute and the basin dimensions are 5 feet by 5 feet by 5 feet water depth.
A 200-kg mass is hanging from a hook conncted to a pulley. The chord around the pulley is connected ot the overhead support at two points. What is the tension in each cord connected to the support if the angle of the chord from vertical is 0º
A simple four-leg intersection needs a 2-phase fixed-time signal. The critical flows in the N-S and E-w directions are 600 and 400 veh/hr, respectively, with a 0.95 peak-hour factor.
If the allowable shear stress is 100 MPa, calculate the maximum shear force V that a W460 X 60 structural steel wide flange is capable of resisting. Use the average web shear approach.
The telescope of the instrument is 5.25 ft above the ground station, whose elevation is 415.65 ft. What is the elevation of the tip of the spire? (Ignore atmospheric refraction and earth curvature)
At a section in a beam the tensile stress due to bending is 70 N/mm2 and there is a shear stress of 25 N/mm2. Determine from first principles, the magnitude and direction of the principal stresses
The sign is attached to the post that is built-in at the ground. Treat the sign as having uniform mass. Neglect the contribution of the post weight. The length d is from the center plane of the sign to the center of the post.
A crop has a consumptive use requirement of 1.2 acre-ft of water per acre of crop land. The crop is planted on 780 acres. Precipitation is 3.2 inches. The remainder of the 1.2 ac-ft/ac requirement is met by irrigation.
An ideal Sterling cycle operates between thermal energy reservoirs at 27 degrees C and 527 degrees C. The maximum cycle pressure is 2000 kPa.
in an air standard otto cycle , the air at the beginning of the compression stroke is at 95 kpa and 22c ,and the cylinder volume is 0.0028 m^3 . the compression ratio is 9 and 4.3 kj are added during the heat addition process
above a peninsula of land. the length of the box is 25 km, its width is 80 km, and a radiation inversion restricts mixing to 25 m. Wind is blowing clean air into the long dimention of the box at 0.8 m/s.
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