A tube with 45 meters long, and a diameter of 1.8 meters and 2.3 meters, inlet and outlet respectively. Water is flowing inside the tube. What is the rate of change of the velocity with respect to its...

A tube with 45 meters long, and a diameter of 1.8 meters and 2.3 meters, inlet and outlet respectively. Water is flowing inside the tube. What is the rate of change of the velocity with respect to its length when the inlet has a velocity of 2100 meters/min?


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