Solve the all parts of given question:
Question: The Poiseuille equation that relates flow in narrow tubes to the pressure difference is analogous to Ohm's Law for current flow.
Part I: What is the resistance to flow in terms of the parameters of this tube?
Part II: What happens to resistance if the radius of the tube is halved?
Part III: What happens to resistance if the radius of the tube is doubled?
I don't just need an answer, work and explanations/walkthrough would be much appreciated! Thanks.