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?