Question

A 1.0-cm-diameter pipe widens to 2.0 cm, then narrows to 0.50 cm. Liquid flows through the first segment at a speed of 4.0 m/s.

1. What are the speeds in the second and third segments?
2. What is the volume flow rate through the pipe?
3. If all three parts of the pipe are at the same height and the pressure in the first segment is recorded at 80 kPa, what is the pressure in the second and third segments of the pipe?

Answer 1

Assuming liquid to be incompressible and hence applying continuity equation  $A_1V_1=A_2V_2$. at each cross-section.

Where A is cross-section area and V is flow speed

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