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Determine the rate of ammonia (NH4-N) utilization and the biomass growth rate for the following conditions:
µm = 0.50 g VSS/g VSS-d
Ks = 0.50 mg/L
X = 10 mg/L
S = 40 mg NH4-N/L
Y = 0.12 g VSS/g NH4-N
kd = 0.01 d-1
write a computer program and use it to calculate the bending moment under each load and at the midpoint c of the beam for values of x from 0 to 24 ft at interval delta x = 1.5ft
Annual maintenance cost for a particular section of highway pavement are $2000. The placement of a new surface would reduce the annual maintenance cost to $500 per year for the first 5 years and to $1000 per year for the next 5 years.
n 2006, the united states emitted 6,000 million metric tons (Mt) of CO2, 26.6 MtCH4, and 1.2 MtN2O. using 100 year global warming potentials, whats is the equivalent CO2 emission rate of the total for these three gases, in GtC-eq/yr
if the sphere falls at a speed of 150mm/s, what is the mean velocity relative to the cylinder wall of the water in the gap surrounding the midsection of the sphere
A block with an inclination of 20 degrees has a weight of 60kg, a height of 1.8m and width 1m, static friction is 0.3, what is the force needed and the height (where the force in the box should be) to pish it upwards
A car weighing 4000 pounds strikes the stopping barrier depicted below head on at a speed of 70 mph. The stopping force in the barrier is a function of how far the car penetrates into the barrier.
A tensile test was performed on a metal specimen having a circular cross section with a diameter of 0.50 inch. The gage length is 2 inches. For a load of 13.5 kips, the elongation was 4.66 x 10-3 inches.
A certain gas weighs 16.0 N/m3 at a certain temperature and pressure. What are the values of its density, specific volume, and specific gravity relative to air weighing 12.0 N/m3 ?
A 4m deep clay layer is underlain by impermeable shale. A sample of clay from the layer is subjected to an appropriate increment of stress in a consolidation test giving the following results
An engineering student, recognizing that the "ideal gas law" requires gas velocity to be function of temperature, suggests that an easy way to increase efficiency would be to change the temperature of the exhaust gas being treated.
A 2.45 m wide rectangular channel has a bed slope of 0.0004 and Manning's roughness coefficient n of 0.015. For a discharge of 2.83 m^3/s, determine the type of water surface profile for depths of 1.52 m, 0.61 m, 0.30 m.
A new chemical remediation tank is needed. Current technology tanks, which costs $150,000, MUST BE DRAINED AND TREATED EVERY TWO YEARS AT A COST OF $30,000; THE TANKS WILL LAST TEN YEARS, AND EACH WILL HAVE A SALVAGE VALUE OF 5%. OF FIRST COST.
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