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A 2-L liquid at 20°C is mixed with 3 L of another liquid at the same temperature and pressure in an adiabatic container, forming a homogeneous liquid solution. Someone claims that the temperature of the mixture rose to 22°C after mixing. Another person refutes the claim, saying that this would be a violation of the first law of thermodynamics. Who do you think is right?
four laboratory-scale continuous-flow completely mixed activated sludge reactors have been operated using wastewater
Two materials A and B are tested and a stress-strain curve is plotted. Material B has a yield stress of 200 MPa and Material A has a Yield stress of 120 MPa. These materials have plastic Deformation occur at the same Yield strain %.
A fireboat pump draws seawater (density=1.95 slugs/ft^3) from a 6 inch diamter submergred pipe that reaches 6 feet under the free surface and discharges 120 ft/s through a 2 inch diamter nozzle 10 feet above the free surface.
A hydraulic jump is observed to occur in a channel with a mild slope at a flow rate of 20cfs/ft. If the depth before the jump is 1 ft, determine the depth after the jump.
The pin has a diameter of d = 0.375 in., and each side of the pulley support bracket has a thickness of t = 0.1875 in. The average shear stress in the pin cannot exceed 45 ksi, and the bearing stress in the pulley support bracket cannot exceed 60 ..
How much must he set aside in his savings to account for the 3-months summer to cover his rent for next year. The savings account earns 3% with monthly compounding.
A parachutist having a mass of 60kg is falling at 8m/s when the parachute is opened. Due to atmosphere drag, the deceleration equation is 60a=588.6-30v^2 in m/s^2.
1. What is meant by the "base value" in an arithmetic gradient 2. Which two alternative comparison techniques requier equal service lives Why
The electric pole and the stub pole are at the edges of the roadway right-of-way. The anchor will be outside of the right-of-way and will require the subdivision to purchase land from the neighbouring farmer (who is VERY UNHAPPY about the subdivis..
A water line to a home is usually 3⁄4" copper tube. What is the flow rate that can be delivered and still maintain laminar flow in the tube?
Determine the maximum force (P) that can safely applied to a steel tee section (20 feet in length) with the point loads at 5 feet from each end. Fixed at one end, pin at the other.
A real estate broker charges a fixed fee of $50 plus a 6% commission on the landowner's profit. If this is uniformly distributed between 0$ and 2000$, find the probability distribution of the brokers total fees.
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