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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?
The distance from the point of intersection of the tangents to the PI of the second curve is 100m while the stationing of the PI of the first curve is 10+432.24.If the radius of the curveis 285.40 m,
To provide a source of cooling on this hot Florida day, the piston is now pulled up until the air reaches a temperature of -100C. It can be assumed that the process is a polytropic one with.
Assuming constant acceleration, determine how long the train blocked the crossing. Dis- regard the width of the crossing.
Calculate how many chlorine atoms will be in an average neoprene chain? b) Sketch the bonding between polychloroprene chains due to sulfur linkages as neoprene is vulcanized into an elastomer. c) You decide to go swimming in Bear Lake in late Novembe..
Imagine a virtual expressway having 3 lanes. The administrating agency wants to detect traffic accidents in 5 minutes wherever they occur to dispatch an emergency response unit.
The wedge is used to level the member. Determine thehorizontal force P that must be applied to move the wedge to theright. The coefficient of static friction between the wedgeand the two surfaces of contact is
Devise an absolute temperature scale where the boiling point of water at 1 atmosphere (101 kPa) pressure = 100 degrees in your scale. What is the ice point of water in your scale
Determine the net power delivered and the cycle efficiency. What is the percent increase in the efficiency compared to an otherwise identical system with no regeneration. Assume “cold air-standard cycle” for both systems above.
Using the method of lee et al. predict the temperature required in an isothermal plug flow incinerator to reduce the xylene level in a waste gas from 1000 ppm to 10ppm. Assume a residence time of 0.7 sec.
Provide a comparative analysis of the types of safeguards would you suggest for the company's information system.
The soil below the footings consists of a medium grain sand (SP) and water is located at a depth of 5 feet below the ground surface. The preliminary structural plan calls for a 10 foot wide footing located at a depth of 5 feet which must support a..
Comment on your results. in both cases, ACI stress limit are to be apply, you may assume that deflection are not critical, and that a tensile stress of 12*f'c^0.5 is permissible at full service loads.
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