Hey, I am new in this forum and looking forward to learn physics which I hate :) My first question concerns possibility, in theory. Say, there is a water tank. Let us say that we made a nanometer hole. The tank is full. Then, we put even more water through that hole. But the hole has something that closes very, very fast. So, 1. Could the water still be in the tank? 2. And if yes, what is going to happen then?