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if the settling velocity of a particle is 2.80 mm/s and the overflow rate of an up flow clarifier is 0.560 cm/s, what percent of the particles are retained in the clarifier? If the flow rate of this problem is doubled, what percent removal of particles would be expected?
A hydroelectric facility operates with an elevation difference of 50.0 m with a flow rate of 500 m3/sec. If the rotational speed is 90 rpm, determine the most suitable type of turbine and estimate the power output of the arrangement.
Part of the roof of a sports stadium is to be supported by the cables AB and AC. The forces the cables exert on the pylon A to which they are attached are represented by the vectors FAB and FAC.
At the end of 15 years, the first motor will have a salvage value of $50 and the second motor will have a salvage value of $100. consider the MARR to be 8%. (note : 1HP=0.7457 kw). Determine which motor should be installed based on the PW criterio..
One of the wells pumps at a rate of 1,240 m^3/ day. The second well pumps at 850 m^3 / day. If the aquifer has a T= 2000m^2 / day and a storage coefficient of 0.0004, when would the wells start interfering each other
what type of SO2 removal device before (in front of) or after (following) the particle collector would you use?
Determine the cycle time for a single engine scraper rated at 21 cy heaped that is used to haul material from a pit to a fill 900 ft away under severe conditions. The average haul speed will be 14 mph and the average return speed will be 20 mph.
Determine the minimum height on the wall to which the firefighter can project water from the hose, so that the water strikes the wall horizontally. The speed of the water at the nozzle is Vc=48ft/s.
Light-Voice Controlling System. We are planning to design a new light-voice controlling system. The voices will basically coordinate the crossing of a road by blind people. Suppose the crossing will be operated by two coordinated systems
A 2.50-g sample of a large biomolecule was dissolved in 13.0 g of carbon tetrachloride. The boiling point of this solution was determined to be 77.85°C. Calculate the molar mass of the biomolecule.
A hydraulic cylinder must produce a minimum force of 3 kN for a pressure of 800 kPa. What minimum diameter piston is required
Materials To Construct An Industrial Building, A small building can be constructed of steel or wood framing. A decision is made to use steel for fire resistance.
A 500 L (132 gal) tank contains 255 mg/L 2,4,6-trichlorophenol dissolved in trichloroethylene (TCE). What is the 2,4,6-trichlorophenol concentration in ppm Assume the temperature of the system is 20 degrees C.
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