1. The problem statement, all variables and given/known data Imagine that you are blowing air through a straw in a cup of water and the root of the straw was connected through a rectangular box with empty base and every side of the rectangular box was cut into "teeth" shape. Bubbles will come out from the teeth of the rectangular box after the straw with certain volumetric flow rate. I couldn't find an idea of how to get the volumteric flow rate of it which related the area of the straw, the area of the triangular teeth and other parameters with the volumetric flow rate of the bubbles. teeth shape --> vvvvvvvv Please refer to the attached picture for your reference of how it looks like. 2. The attempt at a solution May i know how to calculate volumetric flow rate of the bubble out of the teeth of the rectangular box that connected to the straw?