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A permeability test was run on a compacted sample of dirty sandy gravel. The sample was 150 mm long and the diameter of the mold 150 mm. In 83 s the discharge under a constant head of 40 cm was to7 em3 The sample had a dry mass of 51(10 g and its ts was 2680 kg/ms. Calculate
(a) the coefficient of permeability,
(b) the seepage velocity and
(c.) the discharge velocity during the test.
Write a brief description (1-3 paragraphs) of the Saint Venant equations (words only, no equations) comparing them to the Navier-Stokes equations, emphasizing the ASSUMPTIONS on which they are based.
Each week a hen can either lay 12 eggs or hatch 4 eggs, but not both. At the end of the four-week period all eggs and chicks will be sold: an egg will bring 10 cents, and a chick will bring 60 cents.
Determine the discharge for (a) commercial steel (b) cast iron (c) smooth concrete and the flow gain if the highest capacity pipe material is chosen over the lowest.
A 20 kg box is on an upward inclined surface of 30 degrees from the floor. the velocity of the box is zero when it is subjected to a constant horizontal force F=30N. assuming the surface is smooth,
The section of the plywood in the 3rd quadrant is sawed off and the resulting piece is then glued squarely over the 4th quadrant portion of the plywood with glue of negligible weight.What are the x- and y-coordinates of the resulting center of gra..
Compare the physical migration of workers during U.S. industrialization and present-day intellectual transition into a new type of workforce.
What is the concentration of NH3 (in mg/L) of household ammonia that contains 3.00 percent by wieght of NH3. Assume the density of water = 1000kg/m^3
An aluminum rod (1) (E=80 GPa, d=24.5 x 10-6/oC) and a brass rod (2) (E=115 GPa, d=22.0 x 10-6/oC) are connected to rigid supports. The cross-sectional areas of rod (1) and (2) are 4,000 mm2 and 5,000 mm2
Consider tetrachloroethene (PCE) in water. The vapor pressure of PCE is 0.0251atm. Henry's constant for PCE at 25°C is 26.9 atm-L/mol. Estimate the aqueous concentration of PCE in water at equilibrium
During a brake test, the rear-engine car is stopped from an initial speed of 100 km/h in a distance of 50 m.
A loose, uncompacted sand fill is 2 m in depth and has a relative density of 40%. Laboratory tests indicate that the minimum and maximum void ratio of the sand are 0.46 and 0.90, respectively.
The tank material is such that it can withsatand tension caused by a volume expansion of 2%. Determine the max temperature rise in Celcius degress allowed without jeopardizing safety.
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