A liquid ( ? = 1.65 g/cm 3 ) (a) Calculate the smaller section\'s flow speed. (E

Question

A liquid

(? = 1.65 g/cm3)

(a) Calculate the smaller section's flow speed. (Enter your answer to at least two decimal places.)

Your response is off by a multiple of ten. m/s

(b) Calculate the smaller section's pressure.
Pa

A liquid (? = 1.65 g/cm3) flows through a horizontal pipe of varying cross section as in the figure below. In the first section, the cross-sectional area is 10.0 cm2, the flow speed is266 cm/s, and the pressure is 1.20 105 Pa. In the second section, the cross-sectional area is 4.50 cm2. (a) Calculate the smaller section's flow speed. (Enter your answer to at least two decimal places.) Your response is off by a multiple of ten. m/s (b) Calculate the smaller section's pressure. Pa

Explanation / Answer

(a)
Assume incompressible flow.
Conservation of mass requires that the volumetric flow rate in both sections is the same. Since volumetric flow is average velocity times cross sectional area:
v?

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