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1. Air in a piston/cylinder arrangement is at 110 kPa, 25?C, with a volume of 50 L. It goes through a reversible polytropic process to a final state of 700 kPa, 500 K and exchanges heat with the ambient at 25?C through a reversible device. Find the total work (including that of the external device) and the heat transfer from the ambient.
2. A rigid container with a volume of 200 L is divided into two equal volumes by a partition. Both sides contain nitrogen; one side is at 2 MPa, 300?C and the other is at 1 MPa, 50?C. The partition ruptures, and the nitrogen comes to a uniform state at 100?C. Assuming the surroundings are at 25?C, find the actual heat transfer and the irreversibility in the process.
A very small country has just gained independence in the year 2000, at which time its population was 1,000. The new country has a birth rate of 0.02 yr-1, death rate of 0.004 yr-1, immigration rate of 0.01 yr-1, and emigration rate of 0.005 yr-1.
Compare the monolithic approach, the layered approach, and the microkernel approach in terms of degree of difficulty to debug, portability, efficiency, and degree of structure.
As an agronomist you have been approached by a large pepper farmer who wishes to determine an appropriate"yield goal" fot this season. He provides you with yield data for ten year period which indicates that his production has been slowly decreasi..
A w24x192 of a242 steel is to be used as a beam. what are the values of yield stress Fy ultimate tensile stees Fu and modulus of elasticity E for this beam?
The bar is 1m long and its weight, W, acts at its midpoint. The angle is a=30 degrees, and the the spring constant k= 100N/m. The spring in its current position is 1.52m long, and its unstretched length of 1.25 m occurs when the bar is vertical a=..
determine the cycle time for a single engine scraper rated at 21 cy heaped that is used to haul material from a pit to
Fluids (water, air etc) are known as 'incompressible'. which of these would you consider to be inappropriate?
A curved section of a two-lane highway measured in the field was found to be 22 feet wide and have an elevation difference of 1.37 feet between the outside and inside edges of the pavement
A cube of moist soil weighs 330 lb and has a volume of 3.00 ft3. Its moisture content is 27.0% and the specific gravity of solids is 2.72. Compute the void ratio, porosity, degree of saturation, unit weight and dry unit weight of this soil.
A two stage high rate trickling plant is to treat a municipal wastewater having a flow of 2.0mgd. pertinent data: influent BOD5 = 200mg/l, BOD5 removal by primary clarifier = 33%, filter bed depth = 5 to 7ft,
Given the following observations and control station coordinates to accompany Figure, what are the most probable coordinates and error ellipse for station E using a weighted least squares adjustment?
Knowing that each member has a 2 3 4-in. rectangular cross section and that each pin has a 12 -in. diameter, determine the maximum value of the average normal stress (a) in member BE, (b) in member CF.
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