1. The problem statement, all variables and given/known data This is my creation. I have a reservoir at an height h and another one on the floor. I connect them through a pipe with constant diameter. If the water start flowing from the higher reservoir to the lowest with will flow with constant velocity. This is true, isn't it? By Bernoulli, I can say that potential energy per volume is being converted in pressure energy as the water flows down. Am I right?