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1.Calculate the "exact" alkalinity (in mg/L as CaCO_3_) of a water containing 120 mg/L of bicarbonate ion and 15 mg/L of carbonate ion if the pH is 9.43. Please show all steps.
2.The water table is lowered from a depth of 10' to a depth of 20' in a deposit of silt. All the silt is saturated, even after the water table is lowered. The silt's water content is 26%. Find the increase in effective vertical stress at a depth of 34' due to lowering the water table.
On her 23 birthday, and engineer decides to start saving toward building ip a retirement fund that pays 8% interest compounded quarterly (market interest rate) She feels that 600,000 worth of purchasing power in today's dollars will be adequate
A municipal water plant has four filters that are each 20 ft long by 15 ft wide by 5 ft deep. The demand for water requires that they only operate, on average, three filters per day at a loading of 3 gallons per min / ft^2.
Discuss the following examples: a) Car overheating b) Personal budget deficit c) Shower too hot or too cold In all the cases discuss first the normal condition and after that the problem condition.
Two remediation options are being considered for a contaminated land area formerly used for industrial operations. Option 1 involves removing all of the contaminated soil over a two-year period at a cost of $2.2 million per year
Consider a 2014-T6 aluminum alloy the S-N behavior. A cylindrical rod of diameter 13.2 mm fabricated from this alloy is subjected to repeated tension-compression loading along its axis. Compute
A traffic engineer is trying to design a left turn bay on an EB approach to an intersection. The signal timing for left turns will have 10 seconds of "left turn only" green time and 50 seconds of red time each signal cycle.
For a multi-file project that contains just one class, list and describe each of the files that would be required to implement and test the functions of the class.
E on roads extending east and west and S on roads extending north and south.Those roads traveling east and west are designated a number and the letter E.
Two identical pool balls of 57.15 mm diameter may move freely on a pool table. Ball B is at rest and ball A has an initial velocity v=v0i. (a) knowing that b=50 mm and e=0.7, determine the velocity of each ball after impact.
A conversion of land from tomato farming to cotton is planned. Is it true that less water will be used to supplement rainfall based on one growing season ?
Water flows downhill through a 3 in. diameter steel pipe. The slope of the hill is such that for each mile (5280 ft) of horizontal distance, the change in elevation is Δz.
a cantilevered W12X136 (ASTM-A36) steel member beam is 18 feet in length. if a concentrated load of 12 kips is applied at a point 6.25 feet from the beam's free end, use the superposition technique
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