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A sailboat capsizes a large distance from shore. What might be done to 1) right the boat and 2) prevent this from occurring again? How would this be accomplished specifically?
A particular crest vertical curve has long been criticized as being unsafe. Its length is 400 ft. The prevailing speed on the crest vertical curve is 50 mph. In its present condition, its tangent grades are +2% and -3%.
Wastewater flow is 80 gpcd with 170 mg/l BOD and 190 mg/l suspended solids. Size the extended aeration basin and clarifier using the minimum detention time and overflow rates. Calculate the average F/M using an MLSS of 1000 mg/l.
The blower on an air conditioning unit produces 80 cubic feet per minute of air in the ductwork. What is the air flow in cubic meters per hour
0.5 m-diameter concrete pipe (5.0 cm rigid wall thickness with rigid pipe walls) carries water 600m before discharging into another reservoir. The surface elevation of the downstream reservoir is 55 m lower than the supply reservoir.
Estimate the median and 90th percentile load of SS contained in the runoff. Note: COV = coefficient of variance
Calculate the pH of a 1-L solution containing 0.01 M sodium acetate after the addition of 3 mL 0.5 M H2SO4
The emission rate of radon into the crawl space is reported to be 0.6 pCi/m^2-s. An exhaust system was added to provide 1 air exchange per hour (ACH) in the crawl space. The outdoor concentration of radon is 1 pCi/L.
Describe the application of geophysical techniques using electromagnetic induction as a tool for sustainable soil and water management of agricultural fields in the humid tropic Caribbean 300 word limit.
A 30-liter volume of gas at 25 degrees C contains 12 g of methane (CH4), 1 g of nitrogen (N2), and 15 g of carbon dioxide (CO2). Calculate (a) the moles of each gas present, (b) the partial pressure exerted by each gas, and (c) the total pressure ..
The landing gear of an airplane can be idealized as the spring-mass damper system. If the runway surface is described y(t)=y0 cos wt, determine the values of k and c that limit the amplitude of vibration of the airplane (x) to 0.1m. Assume m=2000k..
(a) Calculate the annual costs ($/yr) of meeting the proposed effluent requirement of 0.1 mg P/L using alum to precipitate AlPO4(s). Assume the chemical formula for alum is Al2(SO4)3·18H2O (MW = 666).
At the proportional limit, . gage length of a -diameter alloy rod has elongated . and the diameter has been reduced . The total tension force on the rod was . Determine the following properties of the material
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