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A 60 mph wind blows against a football stadium scoreboard that is 36 ft tall, 80 ft wide, and 8 ft thick (parallel to the wind). Estimate the wind force on the scoreboard. See Fig. 9.28 for drag coefficient data.
Metals yield at a stress much lower than those calculated on the basis of their bond strength alone. This is explained by the presence of defects. Identify the principal defects responsible for this observation.
a shaft is to be designed to support the spur pinion and helical gear shown in the figure on two bearings spaced 700 mm
Air at 17oC and 200kPa is in a rigid, 2m3, insulated tank that has a paddle wheel in it. 733 kJ of work is put into the system by the paddle wheel. How much entropy is produced?
a rigid tank which has a volume of 0.1 m3 contains 1kg of water at 100 celcius. a 3kwatt heater is energized until the
The results follow. Explain the design of the study and determine whether there is an overall significant difference between the means at a = .05? Why or why not? What are the values of the means? What are the business implications of this study t..
water enters a nozzle with a velocity of 0.8 ms and exits with a velocity of 5 ms. the nozzle entrance diameter is 12
Why is a combination of torque and angle measurement or control so popular in mass production operations? What is meant by window control?
A piston-cylinder assembly containing water, initially a liquid at 500F, undergoes a process at a constant pressure of 20 lbf/in2 to a final state where the water is a vapor at 3000F. Kinetic and potential energy affects are negligible. Determine the..
in hydroelectric power plant water at 20 celcius. is supplied to turbine at a rate of 0.6m3s through 200m long
Water flows under a sluice gate in a channel of 10-ft width. If the upstream depth remains constant at 5 ft, plot a graph of flowrate as a function of the distance between the gate and the channel bottom as the gate is slowly opened. Assume free o..
Determine the required thickness t of the tube if its outside diameter d is 200 mm and the desired factor of safety with respect to Euler buckling is n = 3.0. (Assume E =72 GPa.)
during a plant visit it was noticed that a 12-m-long section of a 12-cm-diameter steam pipe is completely exposed to
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