How to decide whether to use nodal or mesh analysis?

The mathmatics in calculating the duration of time it takes to emit a sound wave under water, bounce off an object and return to the source. And calculate the distance away the object is. (Submarines).

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.