3.2 - Force Between Glass Plates
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Practice Questions
Test your understanding with targeted questions
What is surface tension?
💡 Hint: Think about how water forms drops.
Explain pressure difference in terms of surface tension.
💡 Hint: Use the equation ΔP = 2σ/R.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What is the formula for calculating pressure difference due to surface tension?
💡 Hint: Remember the specific dependency of pressure difference on surface tension.
True or False: A larger droplet exerts a greater pressure difference due to surface tension.
💡 Hint: Reflect on the formula ΔP = 2σ/R.
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Challenge Problems
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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.
💡 Hint: Utilize the pressure difference formula appropriately for accurate results.
Discuss how varying the distance between the two plates affects the calculations of the force required to separate them, with specific examples.
💡 Hint: Reflect on the original principles while discussing changes in distance.
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