- #1
bobrsanchez
- 4
- 0
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??
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??