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One kilogram of air (which behaves as an ideal gas) in a piston-cylinder assembly is subjected to two separate processes from the same initial to the same final state: at the initial state the air has a volume of 1,000 L, a pressure of 10^5 N/m2, and a temperature of 420K. At the final state the air has a volume of 100 L, a pressure of 10^6 N/m2, and a temperature of 490K.
Process #1 involves two steps: it first pressurizes the air to 10^6 N/m2 at constant volume and then takes it to the final state at constant pressure.
Process #2 involves a single step taking the air from the initial to the final state, while pV=constant.
(a) Sketch each process on a p-V diagram indicating initial, middle (if any), and final states;
(b) How much heat in kJ is exchanged during each of the two processes;
(c) Which process requires the least amount of heat input or yields the highest amount of heat output.
a horizontal cylindrical tank 4 ft in diameter and 10 ft long is full of water. find the work done in pumping the water to a point 4 above the top of the tank.
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The "sea-level adjusted" pressure at the airport was about 30.57 inches of mercury. Assuming the density of air is 1.30 kg/m3 and the gas constant for air is 287. J/(kg K), calculate the temperature of the air in Fahrenheit.
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The point of intersection of the tangents is located at station (948+67.32). If the design speed of the highway is 60mi/h, determine both the point of tangent and the deflection angles to whole stations for laying out the curve. Select appropriate..
The beam is to be hoisted using two chains. Determine the magnitudes of force and acting on each chain in order to develop a resultant force of 500 directed along the positive axis. Set = 41
Exhaust gas from a chemical process flows at a rate of 8,000 actual cubic feet per minute (acfm) from point A at 250°F and 1 atm pressure. It flows through a circular duct to a fan
A farmer wants to irrigate a piece of land in 15 hrs. The area of the field is 15 acres. the farmer grows alfalfa that requires 3.5 inches of water during the 15 hours.At what flow rate should the farmer pump the water
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