An incompressible fluid is flowing through a vertical pipe with a constriction. The wide section is $2.00 \mathrm{~cm}$ in diameter and is at the top of the pipe. The pressure of the fluid in the wide section at the top is $200 \mathrm{kPa}$. The velocity of the fluid in the wide section is $4.00 \mathrm{~m} / \mathrm{s}$. The narrow section is located $8.00 \mathrm{~m}$ below the wide section. What is the diameter of the narrow section, if the pressure of the fluid in the narrow section is equal to the pressure in the wide section? (density of the fluid is $680 \mathrm{~kg} / \mathrm{m}^{3}$ )
A) $1.42 \mathrm{~cm}$
B) $1.20 \mathrm{~cm}$
C) $1.10 \mathrm{~cm}$
D) $1.55 \mathrm{~cm}$
E) $1.31 \mathrm{~cm}$

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The Answer of  An incompressible fluid is flowing through a vertical pipe with a constriction. The wide section is $2.00 \mathrm{~cm}$ in diameter and is at the top of the pipe. The pressure of the fluid in the wide section at the top is $200 \mathrm{kPa}$. The velocity of the fluid in the wide section is $4.00 \mathrm{~m} / \mathrm{s}$. The narrow section is located $8.00 \mathrm{~m}$ below the wide section. What is the diameter of the narrow section, if the pressure of the fluid in the narrow section is equal to the pressure in the wide section? (density of the fluid is $680 \mathrm{~kg} / \mathrm{m}^{3}$ )
A) $1.42 \mathrm{~cm}$
B) $1.20 \mathrm{~cm}$
C) $1.10 \mathrm{~cm}$
D) $1.55 \mathrm{~cm}$
E) $1.31 \mathrm{~cm}$

An Incompressible Fluid Is Flowing Through a Vertical Pipe with a Constriction