Density and Pressure

Density and Pressure problem 5

We want to measure the speed of a river flow at a certain depth. For this purpose, we use a rectangular tube that has a horizontal strip at a depth where we want to measure the flow, and the opening is directed towards the flow. The vertical strip is out of the water. The tube is open on both sides. It's called the Pitot tube. The water in the pipe rises by 20 cm. What is the speed of the river flow?


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