The population in the world can be simulated using the model /= (1 −/) , where p is population, pm is the maximum capacity, and k is the growth rate. Using Euler’s method, simulate the world’s population from 1950 to 2000. The initial conditions are p0(1950)=2555 million, k=0.026/yr, and pmax = 12,000 million. Calculate your results and compare with the true data below:

Air enters a horizontal, constant-diameter heating duct operating at steady state at 290 k, 1 bar, with a volumetric flow rate of 0.25 m°/s, and exits at 325 k, 0.95 bar. the flow area is 0.04 m2. assuming the ideal gas model with k = 1.4 for the air, determine (a) the velocity at the inlet and exit, each in m/s, and (c) the rate of heat transfer, in kw flow rate, in kg/s, (b) the mass kg 0.3