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A frictionless piston-cylinder device contains 2 kg of nitrogen at 100 kPa and 300 K. Nitrogen is now compressed slowly according to the relation PV1.4 constant until it reaches a final temperature of 360 K. Calculate the work input during this process.
Three solid shafts, each of 3/4 in. diameter, are connected by the gears shown. Knowing that G=11.2*10^6 psi, determine (a) the angle through which end A of shaft AB rotates, (b) the angle through which end E of shaft EF rotates.
Maintenance expenses for a bridge in west Tennessee are estimated to be $200,000 for the first eight years followed by two separate million dollar expenditures in years 12 and 18. The expected life of the bridge is thirty years.
A 100ft steel tape measure correctly when supported throughout its length under a tension of 1- lb and at a temperature of 72F.It is used on the field at a tension of 18 lb and supported at the two ends only.
consuder a simply suppurted beam of length 10 feet with concentrated load of 1000lb at the centre of the beam. Draw the bending moment diagram and shear force diagram
What is the zeta potential? What role does it play in water treatment and explain the difference between coagulation and flocculation.
Air enters an adiabatic nozzle steadily at 300 kPa, 200 o C, and 30 m/s and leaves at 100 kPa and 180 m/s. The inlet area of the nozzle is 80 cm 2 . Determine (a) the mass flow raw through the nozzle, (b) the exit temperature of the air, and (c) the ..
The standard molar entropies of water ice, liquid and vapor are 37.99, 69.91, and 188.83 J K-1mol-1, respectively. On a single graph, show how the Gibbs energies of each of these phases vary with temperature between – 20 C and 150 C
What are Engineering Societies based upon the research? List at least 10 discipline specific engineering societies along with their website addresses.
Assuming the following equation represents the true distribution in the vertical, determine the actual distance below the surface at which the velocity, u, equals the depth-averaged velocity, U.
A one meter diameter cylindrical mass is connected to a 2 meter wide rectangular gate. the gate is to open when the water level drops below 2.5 meters. Determine the required value of the mass of the cylinder in kgs.
Five million gallons per day (mgd) of a conservative substance,with concentration of 10 mg/L is released into a stream having anupstream flow of 10.0 mgd and a substance concentration of 3 mg/L.Assume complete mixing.
An open vat in a food processing plant contains 400L of water at 20 degrees C and atmospheric pressure. If the water is heated to 80 degrees C, what will be the percentage change in its volume? If the vat has a diameter of 3m
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