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1.Given: In 1975 the population of a country was 12 million people. In 2000 the population of the same country was 16.4 million people. Over the 25-year period the country had a birth rate of 30 per thousand per year, and a net migration rate of zero. Assume that population followed the exponential function. Find. Estimate the death rate in the country in deaths per thousand per year
2.A rectangular block of aluminum 30 mm × 60 mm × 90 mm is placed in a pressure chamber and subjected to a pressure of 100 MPa. If the modulus of elasticity is 70 GPa and Poisson’s ratio is 0.333, what will be the decrease in the longest side of the block, assuming that the material remains within the linear elastic region? What will be the decrease in the volume of the block?
When the ambient air is at 70 degrees Fahreneit, 14.7 psia, and contains 21% oxygen by volume, 4.5 lb of air are pumped into a scuba tank, capacity 0.75 ft^3. What volume of ambient air was compressed?
a rectangular beam made using concrete with fc 6000 psi and steel with fy60000 psi has a width b 20 in. the concrete
Consider a 1000 acre residential area with a housing density of four dwellings per acre. Evaluate the peak hourly water use requirement.
What is the tension in the cable connecting the boat to the pier Angle of spray 50 degrees off horizontal axis and is spraying toward the pier and pushing the boat away from the pier.
The frame is desinged to carry the hanging mass at G equal to 167 kg. The frame is supported by a pin connection at C and the rope AB, and constructed with pin connections at points E, F, and D.
A rectangular tube has an outside dimensions that are 2in wide and 4in deep and a wall thickness of 0.25in. The tube is acted on by a bending moment of 12,000lb-in.
An investor purchased 100 shares ofOmega common stock for 10,000. He held the stock for nine years.For the first four years he received annual end-of-year dividendsof $1,000. For the next four years he received annual dividends of$400
Consider a 75-ft wide overflow spillway with no piers and a design head of 18 ft. The crest elevation of the spillway is 2400 ft and the streambed elevation just upstream of the spillway is 2350 ft.
Calculate the number-average molecular weight of a random nitrile rubber [poly(acrylonitrile- butadiene) copolymer] in which the fraction of butadiene repeat unit is 0.30
Congress banned the production of the speedy dry cleaning company's dry cleaning fluid in 2000. Speedy is using a new cleaning fluid. The new dry cleaning fluid has one-sixth the volatility of the former dry cleaning fluid.
Describe the problem of lack of coordination between design and construction in a traditional contract.In agency CM,what expertise does the CM provide during the pre-design and design phase?
Water, initially dry saturated vapour at 4 bar, lls a closed rigid con- tainer. The water is heated until its temperature is 400C. Determine the work done and the heat transfer.
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