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A piston-cylinder device whose piston is resting on top of a set of stops initially contains 0.5 kg of helium gas at 100 kPa and 25°C. The mass of the piston is such that 500 kPa of pressure is required to raise it. How much heat must be transferred to the helium before the piston starts rising?
Estimate the discharge in a rock-bedded stream (d84=30cm) that has an average depth of 2.21m, a slope of 0.0037, and a width of 48m. Assume ks=d84.
In year one, a pharmaceutical mixing tank had a market price of $120,000. It replaced an older smaller mixing tank that had a BV of $15,000.
Using the Gumbel probability function, estimate the probability that a maximum 24 hour depth in any year will exceed 160 mm. What is the probability that the maximum 24 hour depth will exceed 125 mm
What is the concentration of MLVSS in the activated sludge (mg L-1)
The Rappahannock River near Warrenton, VA has a flow rate of 3.00 cms. Tin Pot Run (a pristine stream) discharges into the Rappahannock at a flow rate of 0.05 cms
A simply supported composite beam 3m long carries a uniformly distributed load of intensity q=3.0kN/m. the beam is constructed of a wood member, 100mm wide by 150mm deep
An aquifer is 45 meters deep and has a well that pumps water at 850 cubic meters per day. One observation well is located 45 meters away and has a water surface that is 44.35 meters above the bottom of the aquifer.
An investigation at a particular site reveald 10 m of clay overlying 2m of sand resting on bedrock.the water table was found to be at the ground surface and the piezometric level for the sand to be 2m above ground level
pore water pressure is to be observed during the construction of the embankment. calculate nbspthe pore water pressure
Anna is thinking of changing her cell phone service, and she is comparing three plans: 1. Plan 1 has a $20/month access fee, unlimited nights and weekends, 300 anytime minutes plus
Considere a person who consumes 2100 kcal par day, of which 2000 kcal is converted tu hermal energy.( the remaining 100 kcal is used to do work on the environment.) The person has a surface area of 1.8 m² and is dressed in a bathing suit.
determine the adequacy of W16x40(A-36) of steel beam that supports a uniform load of 800 pounds per foot over a span of 30 feet
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