8.4 - Virtual Fluid Balls Concept
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Practice Questions
Test your understanding with targeted questions
What happens to shear stress in a fluid at rest?
💡 Hint: Think about fluid motion—if it's not moving, what happens to forces acting parallel to surfaces?
What is gauge pressure?
💡 Hint: Consider how we compare pressures to the atmosphere.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What is the pressure at a point in fluid when at rest?
💡 Hint: Think about the definition of shear stress.
True or False: Gauge pressure is always higher than vacuum pressure.
💡 Hint: Consider the definitions of both types of pressure.
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Challenge Problems
Push your limits with advanced challenges
A dam contains water up to a height of 10 meters. Calculate the gauge pressure at the base of the dam (assume density = 1000 kg/m³).
💡 Hint: Use the basic formula for hydrostatic pressure.
A mercury barometer shows a height of 760 mm. Calculate the atmospheric pressure in Pascals.
💡 Hint: Help yourself with the conversion of units and correct unit density for mercury.
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Reference links
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