1. The problem statement, all variables and given/known data I am currently stuck on parts 2b,c and d of this problem. http://www.wopho.org/download/Theoretical_3_Tornado.pdf 2. Relevant equations 3. The attempt at a solution For part 2b, I use the the equation from part 2a and just integrate. I know that as we exit the tornado, the pressure should be atmospheric pressure so I can solve for the constant. but the problem that I have is the ln(r) term. I can choose a sufficiently small r such that the pressure is negative which does not make sense. 2c) I'm assuming it related to part 2b) so I have left that out for now. For part 2d) I think that the solution would involve something about the dew point in air but when I type for information regarding the dew point into Google, I just get complicated formulae. Could someone perhaps suggest a website where I can get more information about this. Any help would be appreciated.