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The If the probability that fluorecent light has a useful life of at least 500 hours is 0.85, find the probabilities that among 20 such lights
(a) 18 will have a useful life of at least 500 hours;
(b) At least 15 will have a useful life of at least 500 hours;
(c) At least two will not have a useful life ot at least 500 hours
what are the factors affecting the hydraulic conductivity?
The company engineer decides that this is too good, that it is not necessary to be this efficient, and proposed that part of the flue gas be bypassed around the electrostatic precipitator so that the recovery of fly ash (particulates) from the flu..
A wave has a height of 1.5 m in water 5 m deep and a wave period of 6 s. Plot the horizontal component of velocity, the vertical component of acceleration, and the dynamic pressure at a point 2 m below the still water level versus time for a 6-s i..
What is the probability that the N-S runway is going to be overcrowded on a given day, if at the beginning of the day the runway is selected to be used?
A very long rectangular channel connects two reservoirs and has a longitudinal slope of 0.005. The channel has a width of 10 m and a Manning’s n of 0.030.
What type of exercise takes place in a classroom setting arranged to look like an emergency operations center or in an actual emergency operations center, and involves simulation using written, telephone, and radio messaging.
A two story school has interior columns that are spaced 15 ft apartin two perpendicular directions. If the loading on the flat roof isestimated to be 20 lb/ft^2 determine the reduced live loadsupported by a typical interior column at
Draw the shear and moment Diagram for a beam that is 10 feet long, supported on the left end by a roler, and the right end by a pin, and has a 1000 lb load placed in the center i.e at 5 feet.
Design a single angle strut connected to a gusset plate to carry 180k n factored load. The length of the strut between center to center intersection is 3m.
As a civil engineer you look up in your strength of materials book and find out that the deflection, for a square beam of width, t, and length, L, when subjected to a tensile force, F, is given by: h=FL/(Et2), where E is Young's modulus.
A 6 inch X 4 inch rectangular beam is subjected to a maximum shear force of 1900 lbf. Determine the shear stresses at each of the following points on the beam cross section:
A film of newtonian liquid folws down the outside surface of avertical cylinder of radius R. the flow is steady, laminar and the thickness of the film is constant.
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