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Helium (Hrom an intie) at a rate of 1.5 lbm/s is compressed inan adibatic compressor from an intial condition of 70 F, 14.7 Psiato final condtion of 1070 F, 147 Psia. Determine The power required to
The evaporation rate from the surface of a 3,650-acre lake is 100 acre-ft/day. Estimate the depth change in the lake in feet during a 1-year period if the net inflow to the lake is 25 cfs. Is the de
while groundwater andinfiltration losses over the period were estimated to be 0.6 inches. Determine the combined amounts of water evaporated and transpired from the region during the year of record.
Calculate the the oritical oxygen demand (mg/L) of a solution containing 450 mg of glucose(C6H12O6) in 2 liters of distilled water.
A result of a 7-day BOD test performed on a sample from anoligotrophic lake was 10 mg/L. The base 'e' BOD rate constantdetermined from previous studies was estimated to be 0.10d-1.
Using the following assumptions, determine the solids retention time, the cell wastage flow rate, and the return sludge flow ratefor the Jambalaya shrimp processing plant WWTP
For arectangular section (b(width) x h(thickness) that is subjected to aforce P that is applied at an eccentricity (e) measured from thecenter of area of the rectangle in the h (thickness) direction
The beam is designed tohold a 10kN heating unit at mid span. There are no other loads onthe beam. Using G40.21 350W steel, select the lightest W shapes forthe beam.
The concrete cylinder 6 in x 12 in broke incompression at a load of 110000 lbs. Compute the crushing strength of concrete. Estimate the tensile strength and the modulus of elasticity.
When filled to capacity, avertical cylindrical un-pressurized storage tank contains water to a height of 14.5m above its base. Given that the height of the tankis 15m, the diameter 9m and wall thick
A steel tank with 2.5 m high vertical walls and a flat triangular floor is filled with three immiscible liquids layered upon each other. Two of the walls are 1.2 m long and perpendicular to each ot
A spherical pressurevessel of 1.2m outside diameter is to be fabricated from a steelhaving an ultimate stress of σU450 MPa. Knowing that a factor of safetyof 4.0 is desired and that the gage p
Determine the normalstress in a basketball of 12 inches diameter and 0.1 inch wall thickness which has been inflated to a gage pressure of 15psi.
a town requiring 2 cms ofwater has two sources, a local well with 15 g/m^3 of a contaminantand a distant surface water source with 2 g/m^3 of the contaminant.
HJ Heinz Corporation is constructing a distribution facilityin Italy for products such as Heinz Ketchup, Jack Daniel's Sauces,HP steak sauce, and Lea & Perrins Worcestershire sauce. A15-year lif
Assume that (t) is givenin degrees, and write the matlab statement to evaluate tan (t) aslong as the magnitude of cos(t) is greater then or equal to(10^-20). If the magnitude of cos(t) less then (10
Using a safety factor of 2.00 and neglecting the pile dead weight, find the length of a 1' diameter circular concrete pile required to take a design load of 50 kips in a soil composed of two layers.
A dairy that processes about 250,000 lb of milk daily produces an average of 65,100 gpd of wastewater with a BOD of 1400 mg/L. The principal opearations are bottling milk and maing ice cream with li
In what sequence are these oxidized compunds reduced by the bacteria, and why is the substrate that is reduced first preferred by the hydrogen acceptor. When do obnoxious odors appear
Define the f/m ratio in the context of biological treatment of wastewater, and relate the f/m ratio to the exponetial growth and declinign growth phases of a bacterial culture.
Suppose you are told that a process must achieve a 2.7 log removal of Giardia cysts. What does that mean in terms of % remaining and % removal
If the specific surface energy for aluminum oxide is 0.90 J/m^2, using data contained, compute the criteical stress required for the propagation of an internal crack of length 0.40 mm.
A process is normally distributed and in control, with known mean and variance, and the usual three-sigma limits are used on control chart, so that the probability of a single point plotting outside
what does the free body analysis look like and how to calculate the loads into the horizontal and vertical members of a free standing jib hoist with a 15' boom and 5000 pound capacity
Determine the side slopes (i.e. 1:3, etc.) of a suppressed (n=0) trapezoidal sharp crested weir with width B and upstream head H so that the discharge through it is the same as that through a rectan