A power plant continuously releases from a 70-m stack a plume into the ambient atmosphere of temperature 298K. The stack has diameter 5m, the exit velocity is 25 ms-1, and the exit temperature is 398 K. a. For neutral conditions and a 20 km h-' wind, how high above the stack is the plume 200 m downwind? b. If a ground-based inversion layer 150 m thick is present through which the temperature increases 0.3°C and if the wind is blowing at lOkmh', will the plume penetrate the inversion layer?