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A wastewater treatment plant has an average flow rate of 25 MGD, and a flow-proportioned average BOD concentration 120 mg/L. How many pounds per day is this? A person produces about 0.17 pounds of BOD per day in fecal waste. What is the population equivalent of the wastewater flow? Based on this calculated population, what would the average daily wastewater production be per person?
Show or formulate the shear and bending moment expressions for each board, and plot/draw the shear and bending moment diagrams of the boards.
Ball A is thrown vertically upward from the top of a 30-m-high building with an initial velocity of 5 m/s. At the same instant another ball B is thrown upward from the ground with an initial velocity of 20 m/s. Determine the height from the ground..
Compare the size of a CMFR (completly mixed flow reactor) and PFR (plug flow reactor) to achieve 50 percent removal of a contaminant, given a flow rate of 10^4 m^3/d and a first-order rate constant of -0.4/hr. Repeat for 99 percent removal.
If the peak-hour factor is .90 and all of the drivers are regular users, what is the level of the service of this compound-grade freeway segment?
Five $1,000 bonds having a bond rate of 8% per year payable quarterly are pur chased for $4,940 and kept for 6 years, at which time they are sold. Determine the selling price that yields a 6% effective annual return on the investment.
The scale of a spring balance reading from 0 to 235 N has a length of 13.0 cm. A fish hanging from the bottom of the spring oscillates....
For a metal and wood structure, how would the economies of construction be obtained (pertaining to the mean and standard deviation of a probability of failure graph)?
A 4 X 8-ft solar collector has water circulating through it at the rate of 1.0 gallon per minute while exposed to sunlight with intensity 300 Btu/ft^2-hr.
What is the average length of queue, the average time spent in the system, and the average waiting time in the queue?
Assuming that the velocity variation within the main channel and the floodplain subsections is much smaller than the change in mean velocities between subsections, find the value of the kinetic energy correction coefficient.
Does the presence of Mg2+ significantly interfere with the determination of Ca 2+ by the EDTA titration?
Calculate uniform load (in addition to self wt.) which will cause the section to begin cracking
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