In a stationary liquid, how does pressure vary with depth below the free surface?
Correct answer: C. It increases linearly with depth
- A. It decreases linearly with depth
- B. It remains constant with depth
- C. It increases linearly with depth
- D. It increases exponentially with depth
Explanation
Hydrostatic pressure increases linearly with depth because the liquid above the point contributes a greater weight. This relation applies when the liquid is stationary and has constant density.
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Hydraulics studies fluid properties, pressure, buoyancy, continuity, Bernoulli's equation, momentum, pipe flow, open-channel flow and hydraulic machines. Water resources extends these principles to pumps, turbines, reservoirs, irrigation, floods and hydrology, while distinguishing laminar from turbulent flow and uniform from gradually varied channel flow.
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