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1.A water sample has bucarbonate concentration of 220 mg/l ( HCO3- )and the PH of the water is 7.9 > Express the approximate alkalinityof this water as mg/l of CaCO3
2.What is the flow rate for a 12-inch diameter pipe with f = 0.028 for a 450-foot pipe that runs between two reservoirs that each have ends submerged under water? The intake end is square-edged and non-projecting. The difference in elevation between the two reservoirs is 150 feet. a).7.8 MGD b).13.3 MGD c).17.7 MGD d).23.8 MGD
commercial management in civil engineering 1-critically analyse the use of project related commercial risk registers
A MIPS-based computer system with 2 GB of main memory that is built on a single circuit board. It is designed with a single control signal between the CPU chip and main memory, i.e. one bit of control that is set to one for Read operations
A soil specimen has a water content of 18% and a wet until weight of 118.5 lb/ft. The specific gravity of solids is found to be 2.72. Find the dry unit weight, void ratio, and degree of saturation.
In a curved prestressed bridge, how should the guided bearings in piers of the curved region be oriented with respect to the fixed bearing in abutment?
If the elastic limit of steel is 5.0 10^8 Pa, determine the minimum diameter a steel wire can have if it is to support a 69-kg circus performer without its elastic limit being exceeded.
When a channel of triangular cross section was new, a flowrate of Q caused the water to reach L = 2 m up the side of the channel. After considerable use, the walls of the channel became rougher and the Manning coefficient, n, doubled.
A paper mill releases 1 m^3/s of treated effluent at 75 C, which is mixed with captured rain water at 13 C before it is released to a nearby river. Regulations dictate that the effluent discharge cannot be over 20 C.
f the design speed of a multi-lane highway is 60 mph, what is the minimum sight distance that should be provided on the road if (a) the road is horizontal and (b) the road has a maximum grade of 5 percent
At the reference temperature, three identical rods of length L form a pin jointed truss in the shape of an equilateral triangle, ABC. Determine the angle theta as a function of delta T, the temperature increase of the rod AB.
At a given initial time, the pressure in thetank is 100 kPa gage, and the atmospheric pressure is 100 kPaabsolute. Some time later, after more gas is pumped into thetank, the pressure in the tank is 200 kPa gage, and the temp.
The acceleration of a particle is defined by the relation a=-8m/s^2. Knowing that x=20m when t=4s and that x=4m when v=16m/s, determine (a) the time when the velocity is zero
compute the finals velocities v1' and v2' after collision of the two cylinders which slide on the smooth horizontals shaft. The cofficient of restitution is e= 0.6. m1 = 2 kg, v1= 7m/s and m2 = 3 kg , v2 = 5 m/s
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