4.2.1 - Shear Strain Rate Relation
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Practice Questions
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What is shear stress?
💡 Hint: Think of how forces apply in layers.
Define viscosity.
💡 Hint: Consider how thick a fluid is.
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Interactive Quizzes
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What is shear strain rate defined as?
💡 Hint: Think about how strain occurs due to applied forces.
True or False: Shear stress is independent of temperature changes in fluids.
💡 Hint: Reflect on how heating affects fluid flow.
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Challenge Problems
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A fluid has a viscosity of 0.8 Pa·s and a velocity gradient of 500 s^-1. Calculate the shear stress acting on the fluid.
💡 Hint: Use the formula: shear stress = viscosity * velocity gradient.
Discuss how increasing temperature affects viscosity in both liquids and gases, providing examples.
💡 Hint: Consider the molecular motion in both cases.
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