Velocity ratio

Determine the ratio at which the fluid velocity in different parts of the pipeline (one piece has a diameter of 5 cm and the other has a diameter of 3 cm) when you know that every point of the liquid is the product of the area of the tube [S] and the fluid velocity [v] the same.

Correct answer:

r =  9:25

Step-by-step explanation:

r=v1:v2 d1=5 cm d2=3 cm  S1=π(d1/2)2=3.1416(5/2)29.8696 S2=π(d1/2)2=3.1416(5/2)29.8696  Q1=Q2 S1 v1=S2 v2  π(d1/2)2 v1=π(d2/2)2 v2 d12 v1=d22 v2  v1:v2 = d22:d12  r = v1:v2  r=d12d22=5232=0.36=9:25



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