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A storage tank has a diameter of 80 ft, a height of 25ft and contains oil to a height of 15ft. the suction pumps, which can handle 15000bbl/d, are started, but the safety valves are clogged and a vacuum is drawn in the tank. the roof is flat and rated to withstand 1.0 oz/sq in. before collapsing. the barometer pressure is 30 in Hg. how long will it takes the tank to collapse? what is the total force on the roof at collapse? how woould more oil in the tank have affected the collapse time? explain.
If the defect rate for the flash drivers is 0.5% and you randomly select four of them for inspection: a) What is the probability that none of them has a defect b) What is the probability that all four have a defect
what is a dummy activity and slack activity and also what are slack variables in linear programming constraints equation
A rigid tank whose volume is 10L is initially evacuated. A pinhole develops in the wall, and air from the surroundings at 1 bar, 25 degrees Celsius enters until the pressure in the tank becomes 1 bar.
How to calculate the depth of a masonry dam of trapezoidal cross section with height of 24ft,2ft top width,,12 ft base width and weight of concrete 150 lb/ft^3.
What relationship between Atterberg limits and cohesion for Shear test
The town of Obfisquitory wishes to use 4 equal volumes of CFSTR's in series to disinfect 2 million gallons per day (mgd) of water containing 1000 coliforms/L to the maximum required concentration (MCL) of 1 coliform/L.
A multinational engineering consulting firm that wants to provide resort accommodations to certain clients is considering the purchase of a three-bedroom lodge in upper Montana that will cost $250,000.
Water flows in a circular pipe of diameter D at a depth y (
determine the minimum length of a 5/16 inch, side fillet weld that will be necessary if the plate is subjected to an axial stress of 20 ksi . use an allowable shearing stress through the throat of the weld of 21 ksi.
Find the coeficient of friction between the trusses and the inclined. Three trusses are 1m long 1kg each.
a transmission tower is held my three guy wires attached to a pin at A and anchored by bolts b c and d if the tension in wire ab is 3.6 kn determine the vertical force p exerted by the tower on the pin at A
A steady fire with an energy release rate of 500 kW occurs in a room 3m wide, 3m long, and 2.4 m high, with a door opening which is 1.8 m high and 0.6m wide. the ambient temperature is 20 degree celcius.
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