A Valve Is Closed and the Fluid Within a Pipe

question 7

Multiple Choice

A valve is closed and the fluid within a pipe is stationary. When the valve is opened, fluid flows through the pipe. What happens to the pressure in the pipe when the valve is opened?

• A)The direction of the pressure change depends on the direction of the fluid flow.
• B)The direction of the pressure change depends on the density of the fluid.
• C)The pressure decreases.
• D)The pressure increases.
• E)The pressure remains the same.

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