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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. form the SDWA the contaminant can not be present at concenterationabove 5 g/m^3. what flow rate are required from the local well andthe surface water?
Estimate the steady state PM10 concentration assuming a PM10 deposition velocity of 0.12 cm/s, prevailing wind velocity of 2.5 m/s, and a constant emission flux of PM10 0.82 mg/m2-s.
(a). Find the sum of moments about point E due to this system of forces (b). Find the sum of moments about point A due to this system of forces (c). Find the resultant couple moment acting on the beam
The flow rate of water flowing in a 3m wide channel is to be measured with a sharp-crested triangular weir 0.5m above the channel bottom with a notch angle of 60°. If the flow depth upstream from the weir is 1.5m
A haul fleet of trucks having a heaped capacity of 15 cy. is to be loaded by a hydraulic backhoe excavator (CT=.48 min.) with a 3 1/2 cy. heaped capacity. Assume the material is a wet loam that weighs 3380 lb/cy in the bank state
The vertical cross-section of the trough parallel to an end is shaped like the graph of y=x6 from x=-1 to x=1 . The trough is full of water. Find the amount of work in foot-pounds required to empty the trough by pumping the water over the top.
Iron and vanadium both have the BCC crystal structure, and V forms a substitutional solid structure in Fe for concentrations up to approximately 20 wt% V at room temperature.
A Timber power-line pole is 10 in. in diameter at its base where it is solidly embedded in concrete. The pole extends 20 ft vertically upward from its base and is subjected to a horizontal pull of 300 lb at its top.
A structural steel beam is attached to a column with bolts. The downward force on the connection is 150 kips. What bolt sizes must be used if the allowable shear stress is 25.0 ksi
What is the length of a 2 degree increment along a (A) meridian and (B) parallel at 45N and 115W. Assume the radius of Earth is 6370 km.
A dam project specifies 97% compaction. Lab tests on the soil being used indicate that it has a maximum dry density of 1900 kg/m 3 at an optimum water content of 13.2%.
Name the three factors that influence the degree to which martensite is formed throughout the cross section of a steel specimen. For each, tell how the extent of martensite formation may be increased.
For unidirectional carbon/epoxy tape at a 60% fiber volume fraction, calculate E11 and E22. Given Ef= 211 GPa and Em =10 GPa. Calculate the fiber weight fraction. Given pf=1.95 g/cm3 and pm =1.3 g/cm3.
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