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If the initial concentration of parathion in the runoff from the agricultural field is 3 ppb, the velocity of the river is 2.3 miles/day, how many days will the fish hatchery have to contain river water in holding tanks until the parathion concentration reaches 5 ppt? Assume that the fish hatchery removes the river 5 miles downstream from the agricultural fields. T = 25 oC.
Why is the ‘time value of money' important for the evaluation of engineering projects? Provide at least one practical example to support your view (max 2 pages).
what is the engineering ethics course where to write about any engineering ethical case and discuss the ethical issue?
A rectangular concrete channel (n=0.015, S_o = 0.005) has a bottom width of 6.0 m and a discharge rate of 25 m^3/s. 1) Compute the normal depth y_n 2) Compute the critical depth y_c 3) Compute the minimum specific energy E_min
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
Discharge from an orifice of 75mm diameter is 0.02 m^3/s under a constant head of 3 m. An external mouthpiece of the same diameter is installed that raises the coefficient of contraction from 0.63 to 1.0.
If a flow of 5.0 cfs is to be carried by an 11000 ft cast-iron pipeline without exceeding a head loss of 137 ft, what must the pipe diameter be
The power output of the turbine is just 0.1 kW. If the process is adiabatic and steady, what is the required flow rate of air through the turbine if the exit state is 100 kPa and - 53 C.
A quality of water within a piston-cylinder assembly executes a Carnot power cycle. During isothermal expansion, the water is heated from saturated liquid at 50 bar until it is a saturated vapor. The vapor then expands adiabatically to a pressure ..
an observer has determined that the time headways between successive vechile on a section of the highway are exponentially distributed and that 65% of the headways btw vehicles are 9 seconds or greater.
two forces applied as shown to a hook support. knowing that the magnitude of P is 35 N, determine by trigonometry the required angle if the resultant R of the two forces applied to the support is to be horizontal and the corresponding magnitude of..
The IIT components of ownership cost based on average annual value are: Tax-3%, Insurance -4%, and Interest-7%. a) What is the average annual value?
A torque of T = 3.00 kN-m will be applied to the hollow thin-walled aluminum alloy section. If the section has a uniform thickness of 4 mm, determine the magnitude of the maximum shear stress developed in the section.
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