Hi all, I am studying for the MCAT and a section in the book lists the equations dT= IR dP=QR dV=iR For thermal, fluid, and electricity flow respectively. It then goes to state that a thicker conduit allows for greater flow. That part makes sense to me because a larger diameter pipe has relatively more volume compared to its surface area, which gives it relatively less resistance compared to a pipe that has a smaller diameter. However, it then goes to say that a "LONGER conduit impedes flow". This part I don't get because I can't see how a longer pipe would in any way increase resistance or slow down the flow rate. For example, wouldn't a 1m pipe of 5m diameter have the same flow rate as a 100m pipe with a diameter of 5 if the pressure difference between two openings of both pipes were equal? Is my book BSing me right now??