Practice Molecular Levels and Viscosity - 4.3.1 | 4. Fluid Flow Through Parallel Plates | Fluid Mechanics - Vol 1
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4.3.1 - Molecular Levels and Viscosity

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Learning

Practice Questions

Test your understanding with targeted questions related to the topic.

Question 1

Easy

Define shear stress in the context of fluid dynamics.

💡 Hint: Think of friction between two moving fluid layers.

Question 2

Easy

What happens to liquid viscosity when the temperature is increased?

💡 Hint: Consider how heating affects movement at a molecular level.

Practice 4 more questions and get performance evaluation

Interactive Quizzes

Engage in quick quizzes to reinforce what you've learned and check your comprehension.

Question 1

What is shear stress?

  • Force per unit area acting perpendicular to fluid layers
  • Force per unit area acting parallel to fluid layers
  • Density of the fluid

💡 Hint: Relate it to friction between fluids.

Question 2

True or False: Increasing temperature decreases the viscosity of gases.

  • True
  • False

💡 Hint: Think about how molecules interact at higher temperatures.

Solve 1 more question and get performance evaluation

Challenge Problems

Push your limits with challenges.

Question 1

A bacterial culture medium has a viscosity of 0.9 Pa.s at 25°C. If the temperature increases to 37°C, how will the viscosity change? Assume it behaves like a typical liquid.

💡 Hint: Consider the behavior of liquids as they heat up.

Question 2

You have a fluid that behaves as a dilatant; as shear stress increases, the required force to maintain flow also increases. Describe an application where this property might be beneficial.

💡 Hint: Think about scenarios where increasing resistance to flow could provide safety.

Challenge and get performance evaluation