Practice Surface Energy And Surface Tension (9.6.2)

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8 questions

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Exercise
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6 sample questions

Question 1.
What is surface tension?
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Think about forces acting on the surface.
Question 2.
How does temperature affect surface tension?
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Consider the energy of molecules.
3Question 3.
What does surface tension measure?
- Force per unit area
- Force per unit length
- Energy per unit volume
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Consider how tension works in ropes.
4Question 4.
True or False: Capillary action occurs only in water.
- True
- False
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Think about other liquids, like mercury.
Question 5.
Determine the pressure difference inside a soap bubble of radius 1 cm, given that the surface tension is 0.03 N/m.
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Remember this is a bubble, so you must use the correct formula that accounts for two surfaces.
Question 6.
If a glass tube of diameter 2 mm shows a height of liquid rise of 5 cm, calculate the surface tension assuming the density of water is 1000 kg/m^3.
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Make sure to convert all units properly.

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