Practice Force Between Glass Plates (3.2) - Basics of Fluid Mechanics- 1 (Contnd.)

Practice: Force Between Glass Plates

Lesson 3.2Basics of Fluid Mechanics- 1 (Contnd.)

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8 questions

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6 questions · about 4 min · pass mark 70%. Hints available.
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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 how water forms drops.
Question 2.
Explain pressure difference in terms of surface tension.
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Use the equation ΔP = 2σ/R.
3Question 3.
What is the formula for calculating pressure difference due to surface tension?
- ΔP = σ/R
- ΔP = 2σ/R
- ΔP = σ/2R
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Remember the specific dependency of pressure difference on surface tension.
4Question 4.
True or False: A larger droplet exerts a greater pressure difference due to surface tension.
- True
- False
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Reflect on the formula ΔP = 2σ/R.
Question 5.
Calculate the force required to separate two plates separated by a liquid droplet of 0.15 mm radius if the surface tension is 0.075 N/m and the area of contact is 0.02 m².
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Utilize the pressure difference formula appropriately for accurate results.
Question 6.
Discuss how varying the distance between the two plates affects the calculations of the force required to separate them, with specific examples.
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Reflect on the original principles while discussing changes in distance.

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