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1.the cost of a small dam is expected to be 40,000 now, $3,000 one year from now, 4,000 two years from now and amounts increasing by 1,000 per year through year ten, after wich they will remain constsnt. At an interest rate of 10% per year, the capatalized cost is neareast A. $81, 325 B. 127,585 C. 147,761 D. 207, 351
2.A flowrate of 1.0 L/min of oil of specific gravity 0.92 exists in this pipeline. Is this flow laminar? What is the viscosity of the oil? For the same flow in the opposite directio, what manometer reading can be expected?
On a plane within a saturated soil mass, the total normal stress is 185 kPa, the pore-water pressure is 98 kPa and the shear stress is 42 kPa. The soil undergoes shear failure and reaches critical state on this plane
Measurements indicate that to cause this flow the force acting on the contents of the control volume is 40i lb. Determine the net rate of flow of linear momentum through the control surface.
Briefly explain how each of the following influences the tensile or yield strength of a semicrystalline polymer and why: (a) Molecular weight (b) Degree of crystallinity (c) Deformation by drawing (d) Annealing of an undeformed material
A steady, incompressible two-dimensional velocity field is given by the following components in the xy-plane u = 0.205 + 1.72x + 0.851y v = -0.509 + 0.953x - 1.72y
A 250 cubic meter reaction tank contains a waste water having an ultimate BOD concentration of 755 mg/L. If the BOD reaction rate constant is -0.352/day, how much BOD is remaining after 12.0 days
Water boils at room temperature of 25 degrees celsius when the pressure is 3.17 kPa (abs). Express this as a vaccum gage pressure (in mmHg) if atmospheric pressure is 101 kPa. Provide details of work to get a good rating.
Two chambers, A and B both have manometers with the same fluid with specific gravity 1.4. When h(sub a) = 6 cm and h(sub b) = 4 cm, what is the gage pressure in chamber A
A dry quartz sand has a unit weight of 100 pcf. What is the soil's unit weight when the degree of saturation is 75% if Gs = 2.66
The train passes point A with a speed of 30 m/s and begins to decrease its speed at a constant rate of at = - 0.25 m/s2. Determine the magnitude of the acceleration of the train when it reaches point B, where sAB = 412 m.
Submarines change their depth by adding or removing air from rigid ballast tanks, thereby displacing seawater in the tanks. Consider a submarine that has a 700m3 air-ballast tank originally partially filled with 100m3 of air at 1500 kPa and 15oC. For..
A wire has a resistance of 1.2×10-2 . What will the wire's resistance be if it is stretched to twice its original length without changing the volume of the wire
Compare bar charts and precedence diagrams in terms of the ease with which activities can be added to the schedule.
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