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A storm sewer is carrying snow melt containing 1200 mg/L of NaCl into a small stream. The stream has a naturally occurring NaCl concentration of 20 mg/L. If the storm sewer flow rate is 2000 L/min and the stream flow is 2.0 m^3/s, what is the concentration of salt in the stream after the discharge point? Assume: completely mixed conditions, NaCl is conservative, and steady state.
The pipe contains two 6 in steel elbows, two fully open gate valves, a fully open 90o angle valve, and a swing check valve. If the discharge end of the pipe is located 20 ft higher than the entrance, what is the pressure difference between the two..
The cost of extending a certain road is $850,000. Resurfacing and other maintenance are expected to cost $175,000 every 3 years and lasts for 96 years. What is the present worth of the road at an interest rate of 6% per year (over that period)
(a) What are some of the important properties of unalloyed copper that make it an important industrial material (b) How is copper extracted from copper suflide ore concentrates
Air enters an electrical furnace at 20oC, 100 kPa, with a volumetric flow rate of 30 m3/min. The furnace delivers air at 40oC to a duct system with three branches consisting of two 15-cm-diameter ducts and a 30-cm-diameter duct.
Vehicular access to the Toronto Island Airport now involves the use of a small ferry, capable of carrying about 8 automobiles or an equivalent number of trucks, which operates across the 150 metre wide body of water known as the Western Gap
The moto draws in the cable at D with a constant acceleration of aD=8 m/s^2. If vD=0 when t=0, determine: a) the time needed for block A to rise 3 m b)the relative velocity of block A with respect to block B when this occurs.
a 110 cubic centimeter volume of clay weighs 145 g in its undisturbed state. when the clay specimen is dried it weighs 110.5g. what is the natural water content of the clay, and what is the degree of saturation Assume Gs=2.70
If the queue clears exactly at the end of the effective green D/D/1 queuing applies, determine the total vehicle delay in the cycle (in veh-sec) .
A runway used for landing only is used by two types of aircraft, one with an airspeed of 120 knots (nautical miles/hr) and the other with an airspeed of 150 knots. The length of common approach path is 6 nautical miles.
A steel plate which is 1.5 m by 1.5 m and 30 mm thick is lifted by four cables attached to its corners that meet at a point that is 2 m above the plate. Determine the required cross sectional area of the cables
Engine Oil at 60 degrees C flows over a 3m long and 2m wide plate whose temperature is maintained at 20 degrees C with a velocity of 2 m/s. Determine the rate of heat transfer from the entire plate.
A four-lane freeway (two lanes in each direction) is on mountainous terrain with 11-ft lanes, a 5-ft right-side shoulder, interchange spacing of one every 10 miles, and a 60-mi/h base free-flow speed.
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