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 inially occupying a volume of 1 m2 at 100 kpa, 27 c undergoes three internally reversible processes in series. process 1-2 compression to 500 kpa during which pv constant process 2-3 adiabatic expanslon to 100 kpa process 3-1: constant-pressure expansion to 100 kpa (a) calculate the change of entropy for each of the three processes. (b) calculate the heat and work involved in each process. (c) is this cycle a power cycle or refrigeration cycle?