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1. Water in a 6-ft3 closed, rigid tank is at 200 F, 90% quality. The tank is then cooled to 20 F. Calculate the heat transfer during the process.
2. A constant-pressure piston/cylinder has 2 lbm of water at 1100 F and 2.26 ft3. It is now cooled to occupy 1/10th of the original volume. Find the heat transfer in the process.
3. I have 4 lbm of liquid water at 70 F, 15 psia. I now add 20 Btu of energy at a constant pressure. How hot does it get if it is heated? How fast does it move if it is pushed by a constant horizontal force? How high does it go if it is raised straight up?
Write a computer program that for a given state of plane stress and a given yield strength of a ductile material, can be used to determine whether the material will yield.
Find at least three web sites that you can understand about "Hypothesis Testing of Means" or "Hypothesis Testing for Means." One can be StatTrek.com, if you want.
why the highest head of the water in the excavation is mathematically guaranteed to occur on the edge of the excavation. explain in mathematical and/or physical.
A 12-ft-long cantilever supports its own dead load plus an additional uniform service (unfactored) dead load of 0.5 kip/ft. The beam is made from normal-weight 4000-psi concrete and has in
For the grouped data acting as of each of the data point in an interval was actually located at the midppoint of that interval, compute the sample mean,variance and standard deviation and compare with the results above.
What is the maxi-mum permissible upward gradient? (After Taylor, 1948.)
Problem 1: The Steel beam has the cross-sectional area shown and the steel has elastic constant of E = 210 GPa, v = 0.3. The thickness of vertical wall is 6 mm and those for horizontal are 4 mm. For the flange,b1 = 60 mm and b2 = 120 mm. the heigh..
A fluid in an aquifer is 23.6m above a reference datum; the fluid pressure is 4390 N/m2. The fluid density is 0.999E3 kg/m3. What is the total energy per unit mass What is the total energy per unit weight
FeCl3 is added to remove excess phosphate. The following reactions occur (the charges are in parentheses): FeCl3 -> Fe(3+) + 3Cl(-) Fe(3+) + PO4(3-) -> FePO4 The equilibrium constant for the second reaction is 10^26.4.
It has been proposed to mix a 1500 L bath containing 5% by volume of H2SO4 with a 1500 L bath containing 5% by weight of NaOH. The Specific gravity of the acid added is 1.841 and its purity is 96%.
What is atomic packing factor? Which crystalline structures exhibit the maximum atomic packing factor values? Please provide detailed solutions, steps and explanations
Explain, using numerical values, why the bands are not spaced evenly along the height of the cylinder. Also, how would you find this spacing if each band is to be subjected to the same stress?
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