Practice Fluid Viscosity (1.7) - Basics of Fluid Mechanics

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9 questions

Flashcard drill
4 cards from this section. Quick, good the night before a test.
Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
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Quiz
3 questions · about 2 min · pass mark 70%. Hints available.
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6 sample questions

Question 1.
Define viscosity.
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Think about fluids that flow easily versus those that don't.
Question 2.
What happens to the viscosity of liquids when heated?
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Consider how syrup flows when warm.
3Question 3.
What is viscosity?
- A measure of volume
- A measure of a fluid's resistance to flow
- A measure of temperature
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Think about how easily liquids flow.
4Question 4.
True or False: Higher temperatures increase the viscosity of liquids.
- True
- False
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Consider what happens when heating syrup.
Question 5.
A hockey puck is gliding over a surface of ice. If the ice is 0.1 m thick and has a viscosity of 0.001 Pa.s, what’s the force due to viscosity?
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You might need to consider the velocity gradient to proceed.
Question 6.
A fluid layer of thickness 0.5 mm flows between two plates. If the dynamic viscosity is 5 Pa.s and the velocity of the top plate is 0.1 m/s, find the shear force acting on the surface.
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Identify your surface area and work through the calculations.

5 more questions in this section. Enroll free to practise them all.