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For the 8-in. I beam shown (Figure P4.44), compute the maximum transverse shear stress when the beam is simply supported at each end and subjected to a load of 1000 lb in the center. Compare your answer with the approximation obtained by dividing the shear load by the area of the web (only) with the web considered to extend for the full 8-in. depth.
Also determine the normal stress and the shear stress on a plane making an angle of 30? with the vertical direction, and determine the angle of the resulting force with the normal vector to that plane.
The Adair wind farm was commissioned in 2008 by MidAmerican Energy. The wind farm, located in Iowa on the border of Adair County and Cass County, is composed of 76 Siemens wind turbines each with a rated capacity of 2.3 MW. Each wind turbine has a ro..
A piston-cylinder assembly contains 2 lbm of water, initially at 100 lbf/in.2 and 400o F. The water undergoes two processes in series: a constant pressure process followed by a constant volume process. At the end of the constant volume process, the t..
(i) What is the expression for b(t) in terms of b(t -1)? (ii) What is the equilibrium debt/income ratio? Is this country a creditor or debtor in equilibrium? (iii) If the initial debt/income ratio is 30%, will this rise or fall over time?
Review published articles that describe the concept and process of partnering, and list major differences between partnering and traditional methods of contracting strategies.
explain the factor, which inhibit the use of a very high resolution and a large number of colors for display in the case of raster scanning display devices.
consider an air-standard otto cycle and a modified cycle in which the isentropic compression and expansion processes
Saturated steam flowing at 3.5 kg/s and 200 kPa is condensed into saturated liquid at the same pressure in a counter-flow heat exchanger. The coolant is water with an inlet temperature of 18 degrees Celsius and an outlet temperature of 35 degrees Cel..
derive a relationship between partial molar excess enthalpy activity coefficient of species i and temperature. assume
Verify that the exact solution from Prob. P4.80 is consistent with your result in part (a).
a steam power plant uses an ideal rankine cycle. superheated vapor enters the turbine at 8 mpa 480c. the condenser
assume air flows isentropically through a converging-diverging nozzle. at station 1 which is aft of the throat and has
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