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Air is contained in an insulated, rigid volume at 20 C and 200 kPa. A paddle wheel, inserted inserted into the volume, does 720 KJ of work on the air. If the volume is 2 cubic meters, calculate the entropy increase assuming constant specific heats.
List the densities in solid, liquid and gaseous state. Also compare the densities for each of them and calculate the density it will have in any ideal gas state.
Determine the percent error n in replacing the sine and the tangent of an angle by the value of the angle in radians for angle values 5 degrees, 10 degrees, and 20 degrees. Explain the qualitative difference between the sine and tangent results
Biological treatment processes for wastewater can be catogarised as dispersed growth and attached growth systems. Discuss the advantages and disadvantages of attached growth systems over dispersed growth systems.
Transportation network, A power generator at a dam can send 300 megawatts to substation 1, can send 200 megawatts to substation 2, and can send 250 megawatts to substation 2
this concentration is based on an assumption that the individual is generally healthy and is exposed for 8 hours per day over a working lifetime ( that is from age 18 to 65 years). assuming a body weight of 78 kg and an inhalation rate of 0.63 m^3..
the circular top of a can has a radius of .0320m. the pull-tab has an area of 3.8x10^-4 m^2. the absolute pressure of the carbon dioxide in the can is 1.40x10^5Pa. find the force that these gas generates on the top of a can?
In addition to performing the cut-and-fill operations, the contractor needs to excavate the entire building footprint to a depth of 8 feet for a basement construction made of concrete masonry perimeter walls supported by 2'-0" X 0'-10" continuous ..
Consider the steady-flow energy equation applied to the given extrusion process. Since the die is horizontal then there will be no change in potential energy from inlet to outlet. Hence the potential energy terms can be neglected.
Air pollution in a city is caused by the following four sources: vehicle exhaust (V), industrial exhaust (I), dust (D), and pollen from plants and trees (T). On a particular day, the likelihood of air pollution caused by these sources is 4:3:2:1, ..
What is your recommendation for the maximum size of coarse aggregate for the following situation? A continuously reinforced concrete pavement cross section contains a layer of No. 6 reinforced bars at 15.24 cm centers,
The superelevation rate is 0.084. Prepare a plot showing the ordinates required for the transition from the tangent section to the full superelevated section, assuming that the pavement width is 7.3 m wide. Make any necessary assumptions.
What is the concentration of tracer in the reactor 1 h after tracer addition is terminated? The reactor had an initial concentration of tracer of 1.0 mg/L when tracer addition commenced.
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