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Water is ?owing in a 2-cm-diameter pipe with a ?ow rate of 0.0002 m3=s. For an entrance that provides a uniform velocity pro?le, estimate inviscid core length and the entrance length if the water temperature is (a) 20, (b) 40, (c) 60, and (d) 80-C.
an air conditioner based on the ideal vapor-compression refrigeration cycle uses r134a as the working fluid. states
A periodic function f(t)is of period 10 defined by f(t)=N+t2, 0
Concrete has a density of 2500 kg/m3 and a compressive strength of 30 MPa. What is the maximum height of a column of concrete that can support its own weight? Does the radius of the column matter?
The velocity profiles at locations x=0.1, 0.30 and 0.5. Plot contours of u-velocity and v-velocity. How many iterations did it take to get your solution?
pump a can empty a tank in four hours while pump b takes only three hours to empty the tank. how long will it take to
2 balloons filled with helium made of latex same unfilled thickness 2mm amp 3cm diameter released at sea-level.balloon
Describe the differences among the three PLC types : rack/slot address based, tag based, and soft PLCDescribe the differences among the three PLC types : rack/slot address based, tag based, and soft PLC.
air is used as the working fluid in a simple ideal brayton cycle that has a pressure ratio of 10 a compressor inlet
A petroleum engineer estimates that the present production of 400,000 barrels of oil during this year from a group of 10 wells will decrease at the rate of 15% per year for years 2 through 10. Oil is estimated to be worth $25 per barrel. If the inter..
You are throwing a dinner party and decide to prepare instant Chinese noodles (chicken flavor) for all your guests. From the cooking instruction on the back of the package, you determine that you will need to bring 44 cups of water to a boil for your..
Determine the view factors F12 and F21 for two concentric spheres characterized by radii R1 and R2, where R2 > R1. What is the view factor when the smaller sphere is displaced from the origin by R1/2 and R2 > 4R1?
25 kg of water are placed in a rigid, initially evacuated container which has a volume of 2 m3 . After sitting for some time, the pressure stabilizes at 10.0 bars. What is the specific entropy (kJ/kg K)of the liquid vapor mixture?
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