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A reservoir with a length of 20 km and width of 3 km has a flood inflow of 1000 m^3/s.
(a) If exit flow is restricted to 500 m^3/s, how fast is the water level rising in the reservoir per day?
(b) If the exit flow is a spillway that follows the formula for flow over a weir, set up the mass balance equation that governs the rise of water.
(c) Will water levels rise at the same rate as in (a), at a lesser rate, or a greater rate? What three additional pieces of information would we need to solve the problem?
how many cubic feet of seawater, density 60 lb/ft^3, must be processed to recover 1 ton of magnesium, 1,272 ppm?
If the effective stack height of the plant is 100 m, and the ground reflects the SO2 emission perfectly what is the SO2 concentration at a sampling point located 2 m above the ground in the town.
A bicyclist travels on a level path. The frontal area of the cyclist and the bicycle is 2.3 ft^2 and the drag coeffcient is 1.2. The specific weight of the air is .075lb/ft^3.
At point 2, the velocity and pressure are 14 ft/s and 23 psi. Determine at which of these two points the elevation is higher. Calculate the height difference. (Assume the sp ecific gravity of butane is 0.6 and that the butane is at a temperature o..
if each cord can sustain maximum tension of 50N before it fails, determine the greatest weight of the flower pot the cords can support
In what direction did the cue ball move after the collision? What percentage of its kinetic energy did the cue ball impart to the eight ball?
The difference between the total and static pressure before a shock is 75 psi. What is the maximum static pressure that can exist at this point ahead of the shock? The gas is oxygen.
Calculate the ozone column amount in DU, corresponding to the pressure profile and ozone concentrations given above. Recall Avogadro's number, NA = 6.0 × 1023 molecules per mole, from which one can calculate [O3]= ..
If a single deposit of $15,000 is invested at 2.75% yearly interest, what equal year-end withdrawls can be made each year for 10 years, leaving nothing in the fund after the 10th withdrawl
A pipe line of 1.25 m diameter has a circular gate at its end. This gate can be operated around its horizontal diameter. If the pipe is flowing full with velocity almost equal to zero, calculate the turning moment required to operate the gate
Estimate the average hourly, average daily, and minimum hourly residential sewage flows from an area serving a population of 1500 people. Assume that the lenghth of sewer and house drains equals 3.0 km and that infiltration occurs
A one-way solid concrete slab is to be used for a simple span of 16 ft. In addition to its own weight, the slab carries a superimposed dead load of 50 psf and a live load of 75 psf.
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