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1.As a design engineer you are responsible for all the drawing documentation from your organisation. What are the key aspects of the drawing you need to check before sending it to the construction division?
2.What roles should technical experts like water engineers play in public policy decision-making issues, such as water demand management, water reuse and associate water quality issues? What sorts of processes are needed to earn public credibility and trust in the integrity of the decision-making process?
A speedboat on hydrofoils is moving at 20 m/s in a freshwater lake. Each hydrofoil is 3 m below the surface. Assuming, as an apporximation, frictionless, incompressible flow, find the stagnation pressure(gage) at the front of each hydrofoil.
The velocity distribution for water (20 C) near a wall is given by u=a(y/b)^1/6 where a=10m/s, b=2mm, and y is the distance from the wall in mm. Determine the shear stress in the water at y=1mm. [viscosity of water at 20 C = 1.81 x 10^-5]
The company expects to spend $100,000 per year for labor and $125,000 per year for supplies before a product can be marketed. At an interest rate of 15% per year, what is the total equivalent future amount of the company's expenses at the end of 3..
The 15-Mg tank car A and 25-Mg freight car B travel towards each other with the velocities. If the coefficient of restitution between the bumpers is e=0.6, determine the speed of each car just after the collision.
A sample of argillaceous soil with a volume of 1x10-3 m3 and a mass of 1.762 kg, after oven dried, has a mass of 1.368 kg. The relative density of the grains is equal to 2.69. Determine, for the sample in its original condition
A lead-zinc mine is to be developed by a room-and-pillar layout. The mine is located at a depth of 500ft, the overlying rock has an average specific gravity of 2.56, and the pillar rock wast tested and found to have a
Draw the influence line for the shear at point B. Plot numerical values every 5 ft. Assume the support at A is a roller and C is fixed. EI is constant.
A 800 m vertical curve joins a -3% grade line to a 5% grade line. The PVI of the curve is at station 6200 and its elevation is 600.6 ft. Compute the elevations at 100-ft stations throughout the curve.
Calculate the vapor pressure, air pressure, relative humidity, and air density at elevation 1500 m if air temperature is 25 degrees C and dew point temperature is 20 degrees C and the lapse rate is 9 degrees C/km
A fireboat pump draws seawater (density=1.95 slugs/ft^3) from a 6 inch diamter submergred pipe that reaches 6 feet under the free surface and discharges 120 ft/s through a 2 inch diamter nozzle 10 feet above the free surface.
A 32-in.-wide by 0.125-in.-thick by 110-in.-long steel sheet is to be formed into a hollow section by being bent through 360° and having the long edges welded (i.e., butt-welded) together. Assume a cross-sectional medial length of 32 in.
A Carnot power cycle uses 0.45 kg air, modeled as an ideal gas, as the working fluid. The net work, Wcyc, is 93.64 kJ and the thermal efficiency is 0.6. During the isothermal expansion the volume triples.
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