Hello there, Im trying to figure this assignment question and I have hit hurdle. Can someone please help with figuring out what the velocity and pipe diameter will be?? Question: In a plant 20m3(cubic)/h of water at 20 degrees C is to flow via gravity from a storage tank to another one. the difference in elevation is 15m and total pipe length is 50m. I thought it would be 9.81 m/s because of gravity but that seems too fast. Can someone please help. Thanks in advance!