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One million gallons per day of water is pumped out of the ground and is sent down the mountain in a square 1A????1 A????1 1A????1 channel to a community. Chlorine is added at the beginning of the channel to react with and disinfect (get rid of) the 50 ppm microorganisms in the water. Assume a first order reaction with a k = 0.1 min -1 . At what distance is the concentration of microorganisms equal to 1 ppm?
material (LCY) in 12 yard dump trucks, placing it, and compacting the weight of the soil is 3,750 lb/cu.yd. (30 pts.) (show your calculations) a) Find the Swell and Shrinkage b) Load and Shrinkage Factors
what is the nominal yearly interest rate on a loan with quarterly interest of 3% with quarterly compounding
Calculate expected error L if a theodolite has direct angular accuracy of 10" and a distance of 1500m was measured.
An 8-inch water main with a flow rate of 14 ft3/sec raises 100-feet. At the beginning of the main the pressure is 110 psig and drops to 50-psig at the end. The calculated Hl = 11.7 m.
The sulfur dioxide (SO2) stack-gas concentration from fossi-fuel combustion is 2 ppmv. Determine the stack-gas SO2 concentration in units of micro grams/m^3. Assume 0C and 1 atm pressure
The initial conditions of the helium are 7 ft^3, 80 psia, and 100 F. The helium expands reversibly according to process PV^1.5=C until the pressure reaches 15 pisa.
A small truck is to be driven down a 4% grade at 70mi/hr. The coefficient of road adhesion is 0.95, and it is known that the baking efficiency is 80% when the truck is empty and decreases by one percentage point for every 100 lb of cargo added.
Consider the two-bar truss shown in the figure below, subject to a concentrated load F. Both bars have the same cross-sectional area A1=A2=A. As well, θ1=θ2=θ, and the dimension L is constant. Assume the bars are made of the same material with ela..
A 12 ft x 12 ft square area carrying a uniform load of 5000 lb/ft^2 s applied to the ground surface. Find the vertical stress increment due to the load at a depth of 25 ft below the center of the loaded area.
Describe the problem of lack of coordination between design and construction in a traditional contract. In agency CM,what expertise does the CM provide during the pre-design and design phase.
Estimate the total cost and cost per linear foot for furnushing and driving steel-sheet piling for construction of the basement of a building, 150 by 240 ft. the piles will be 22 in. wide, 18 ft. long, and weigh 40.3 Ib/Lin ft. the piles will be driv..
(1) a constant wind velocity that is twice the mean wind velocity and operating half the time; and (2) a constant wind velocity that is three times the mean wind velocity operating one-third of the time.
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