19. Fluid Mechanics

Which of the following terms best describes the phenomenon that involves movement on a zone of compressed air?

A long circular pipe carries an incompressible fluid with velocity $v_1$ and cross-sectional area $A_1$ at one end, and velocity $v_2$ and area $A_2$ at the other. According to the continuity equation, which of the following relationships must be true?

In the context of fluid flow along a coastline, if the water velocity increases as the channel narrows, according to the continuity equation $Av=k$, in which direction is the current moving relative to the narrowing section?

If a fluid apparatus demonstrating the $\mathrm{continuity}\mathrm{equation}$ is entirely submerged in water, would the width of the central peak in the velocity profile change, assuming the $\mathrm{flow}\mathrm{rate}$ remains constant?

If air flows through a rectangular hole measuring $2\mathrm{ft}$ by $3\mathrm{ft}$ at a velocity of $100\mathrm{ft}/\min$, what is the volumetric airflow rate through the hole?

A closed tank is partially filled with glycerin and has a small opening at the bottom. If the air above the glycerin is at a higher pressure than atmospheric pressure, which of the following best describes the speed of the glycerin as it exits the opening at the bottom, compared to if the tank were open to the atmosphere? Assume the height of the glycerin column remains the same. $v=\sqrt{\frac{2(P+\rho gh-P\_\mathrm{atm})}{\rho }}$

In a system of flow tubes with varying lengths but identical cross‑sectional areas, which flow tube length will have the greatest flow rate, assuming all other conditions are constant?

Which property of a material most directly determines how it is carried by wind in the context of fluid flow and the continuity equation ($Av\rho =constant$)?

Which of the following statements about air is correct in the context of fluid flow and the continuity equation?

Which of the following statements about fluid movement is not correct?

In a horizontal pipe where water flows steadily with negligible viscous effects, which of the following statements about the speed and cross-sectional area at two points along the pipe is correct according to the continuity equation?

A horizontal pipe has a cross-sectional area $A_1$ at one end and $A_2$ at the other. Water enters the pipe at speed $v_1$ through the end with area $A_1$. What is the speed of the water, $v_2$, at the end with area $A_2$ according to the continuity equation?

When water flows through a horizontal pipe bend and discharges into the atmosphere, which of the following statements about the pressure at the exit ($p$, discharge point) is correct?

Which of the following best describes the effect of a blockage in the static port of a Pitot-static tube when measuring the airspeed of a fluid flow?

Which term best describes an equipment or process powered by compressed air?