Practice Capillarity Height (1.3.2) - Lecture - 13 - Fluid Mechanics

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6 sample questions

Question 1.
What is capillarity?
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Think about how liquids behave in thin tubes.
Question 2.
What effect does diameter have on capillary height?
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Refer to the formula discussed earlier.
3Question 3.
What does capillarity refer to?
- Fluid movement against gravity
- Heat transfer
- Sound waves
- Electrical currents
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Think about how liquids travel in thin tubes or soil.
4Question 4.
True or False: A higher contact angle always increases capillary height.
- True
- False
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Consider the implications of wetting versus non-wetting.
Question 5.
Calculate the capillary rise of water in a tube with a diameter of 2mm, where the surface tension is 0.072N/m, the contact angle is 0 degrees, and the liquid density is 1000kg/m^3.
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Plug the values into the capillary rise formula and simplify.
Question 6.
Discuss how changing the surface tension and contact angle affects the height of fluid in various applications.
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Consider practical scenarios, like how different liquids behave in the same plant system.

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