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Questions and Answers
What is responsible for the reduction in the velocity of molecules in the direction of laminar flow?
What is responsible for the reduction in the velocity of molecules in the direction of laminar flow?
- Increase in thermal energy
- Random directions after collision (correct)
- Macrosopic kinetic energy
- Transfer of momentum between layers
Why does the interaction between molecules in liquids result in viscous drag?
Why does the interaction between molecules in liquids result in viscous drag?
- Random directions after collision
- Increase in thermal energy
- Stronger intermolecular forces in liquids (correct)
- Decrease in coefficient of viscosity
What does the law for viscous force on a sphere moving through a viscous medium state?
What does the law for viscous force on a sphere moving through a viscous medium state?
- Viscous force is inversely proportional to radius and velocity
- Viscous force is directly proportional to the radius, velocity, and coefficient of viscosity (correct)
- Viscous force depends on temperature only
- Viscous force is independent of the medium
How is the viscous force equation derived for a spherical object moving through a viscous medium?
How is the viscous force equation derived for a spherical object moving through a viscous medium?
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What effect does a change in temperature have on the coefficient of viscosity for most liquids?
What effect does a change in temperature have on the coefficient of viscosity for most liquids?
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