Engineering, 22.02.2020 00:54 gtemple22pdzs4j
Assume a factory releases a continuous flow of wastewater into a local stream, resulting in an in-stream carcinogen concentration of 0.72 mg/L just below the outfall. Suppose this carcinogen has an oral potency factor of 0.45 (mg/kg-day)-1 and that it is degradable with a reaction rate coefficient k of 0.23/day. To keep the problem simple, assume that the stream is uniform in cross section, flowing at the rate of 2 mph, and that there is no other sources or sinks for this carcinogen. At a distance of 150 miles downstream, a town uses this stream as is only source of water. Estimate the individual residential lifetime cancer risk caused by drinking this water.
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Engineering, 04.07.2019 08:10
Which of the following is an easy way to remember the modified “x” tire rotation? a. nondrive wheels straight, cross the drive wheels b. drive wheels straight, cross the nondrive wheels c. drive wheels crossed, nondrive wheels straight d. drive wheels crossed, nondrive wheels crossed
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Acompressor receives the shaft work to decrease the pressure of the fluid. a)- true b)- false
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Engineering, 04.07.2019 18:10
Abrake has a normal braking torque of 2.8 kip in and heat-dissipating cast-iron surfaces whose mass is 40 lbm. suppose a load is brought to rest in 8.0 s from an initial angular speed of 1600 rev/min using the normal braking torque; estimate the temperature rise of the heat dissipating surfaces.
Answers: 3
Assume a factory releases a continuous flow of wastewater into a local stream, resulting in an in-st...
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