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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.
A cylindrical tank with inside diameter of 300mm and wall thickness of 5mm is subjected to an internal pressure of 2Mpa. The tensile stress in mpa in the wall of the tank is mostly near
A piston-cylinder assembly containing 1/4 kg of a gas undergoes a constant pressure process at 5 bar beginning with a specific volume of 20 m^3/kg. for the gas in the system the work is -15 kj. determine the final volume of the gas in m^3
The rigid bar abcd is supported by a pin at B and restrained by identical steel bars at C and D, each of area 250mm 2 . if the temperature is increased by 8 0 C, find out the force P that will cause the bar at c to be stress-free.
Find the dimensions of a rectangular concrete channel to carry a flow of 150 m3/s, with bottom slope 0.015, and mean velocity 10.2 m/s.
Explain how the stregth of the economy as a whole could affect the marginal benefits and the marginal costs associated with a decision to purchase a home.
The motion of a particle is defined as x=t^2-8t+7 and y=0.5t^2+2t+4, where x and y are in meters and t is in seconds. Determine the magnitude of the smallest velocity reached by the particle, and the time, position, and direction of that velocity.
Water flows at 8 m^3/s through a rectangular channel 4 m wide and 3 m deep. If the velocity is 1 m/s, calculate the flow depth in the channel. If this channel expands downstream to a width of 5m and the depth decreases by 0.5m from the upstream de..
Double the width of the window, using widen, set the height of the window so that it is the same as the width, and set the title to the new value "Square Window".
What are the quantitative measures of reliability (discuss measures for hardware, software, personnel, facilities, and data)?
the weigt w causes atension of 100 lb ic cable cd. if d=2ft, what is the moment about the z axis due to the force eserted by he cable cd at point c.
At an axial load of 23 kN, a 40-mm-wide by 10-mm-thick polyimide polymer bar elongates 2.7 mm while the bar width contracts 0.17 mm. The bar is 240 mm long. At the 23-kN load, the stress in the polymer bar is less than its proportional limit.
Discussion on how sustainability and green engineering can be integrated in the four components of materials science and engineering?
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