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Lines of levels were run requiring (n) instrument setups. If the road reading for each backsight and foresight has a standard deviation of +-0.005 ft what is the standard deviation for n=40?
A mass of .525g of NaCl has been added to a cylinder containing water. The cylinder diameter is 1.5in and depth of water in 5inches. Determine the concentration of the sodium ion in solution, showing your ans in units of a) mg/L b) mass % and c) m..
What is the length of the partial wavelength for electromagnetic energy with a frequency of 15 MHz and a phase shift of 263 degrees (in meters)?
A system consists of liquid oxygen in equilibrium with oxygen vapor. How many phases are present. The system undergoes a process during which some of the liquid is vaporized.
A company produces two kinds of septic tanks: type A and type B. Each type B tank takes twice as long to produce as a type A tank. If it only produced type A tanks, the company has the time to produce a maximum of 2000 tanks per week.
Use the Bernoulli equation to describe how this manometer can be used to measure the flow rate through the meter.
Write a paper on steel sustainability.
The effective angle of friction (phi) was found to be 26 degrees for a normally consolidated soil. If the soil is tested in consolidated drained triaxial test under sigma3 = 60 kPa, what would be the failure deviatoric stress sigma1-sigma3 stress
For a circular curve with a radius R of 400 meter, what is the degree of curve by (a) arc definition and (b) chord definition
If the evaporation rate from an open water surface is 0.27 inch/day in Tucson Arizona, what should be the surface area of the lagoon? (Note: arsenic does not evaporate but remains in the liquid water)
Develop an estimate of the volumetric flow rate of air that will be required for aeration of the mixed liquor in an activated sludge system.For this calculation, assume that the (ultimate) CBOD is 200 mg/L and (ultimate) NBOD is 50 mg/L.
Water leaves a reservoir at 0.05 m^3/s through a 200-mm riveted steel pipeline that protrudes into the reservoir and then immediately turns a 90º bend with a local (minor) loss coefficient equal to 0.3.
A biodegradable industrial wastewater (paper production) has a COD of 600 mg/ L. If the BOD progression follows first-order kinetics with a rate constant of 0.10 per day, determine the BOD5
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