Trough

How many liters of water per second can go via trough, which has a cross-section of a semicircle with a radius of 0.5 m and water speed is 142 cm per second?

Correct answer:

V =  557.6 l/s

Step-by-step explanation:

r=0.5 m v=142 cm m=142:100  m=1.42 m  S=π r2/2=3.1416 0.52/20.3927 m2 V1=S v=0.3927 1.420.5576 m3  V=V1 l=V1 1000  l=0.5576 1000  l=557.6 l=557.6 l/s



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