Practice Applications Of Surface Tension (4.6.2) - Fluid Flow Through Parallel Plates

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8 questions

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Exercise
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Quiz
2 questions · about 1 min · pass mark 70%. Hints available.
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6 sample questions

Question 1.
What is surface tension?
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Think about why raindrops form shapes.
Question 2.
How does temperature affect surface tension?
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Recall that heat changes molecular motion.
3Question 3.
What causes surface tension in a liquid?
- Only cohesive forces
- Only adhesive forces
- Cohesive forces exceeding adhesive forces
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Think about the structure of liquid surfaces.
4Question 4.
True or False: Surface tension increases with rising temperature.
- True
- False
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Recall how heating affects molecule interactions.
Question 5.
Calculate the surface tension exerted by water if a droplet has a radius of 0.5 cm and creates a pressure difference of 0.1 atmospheres on the surface.
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Remember the pressure relationship for spherical droplets.
Question 6.
Discuss the implications of changing surface tension in detergents and its effect on cleaning efficacy.
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Consider how dish soap behaves compared to plain water.

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