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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is the formula for calculating pressure difference in a bubble?
💡 Hint: Think about the role of surface tension in this context.
Question 2
Easy
Define surface tension.
💡 Hint: Consider the properties of liquids.
Practice 4 more questions and get performance evaluation
Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
What is the primary cause of surface tension in liquids?
- Gravity
- Cohesive forces
- External pressure
💡 Hint: Consider how molecules interact at the surface.
Question 2
True or False: The pressure difference inside a droplet is equal to the pressure outside.
- True
- False
💡 Hint: Think about the forces at play in bubbles.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Given a liquid with a surface tension of 0.072 N/m and a droplet of diameter 0.4 mm, calculate the pressure inside the droplet compared to the outside.
💡 Hint: Use the formula carefully, remembering to convert diameter to radius.
Question 2
Discuss how changes in temperature to 80°C might affect surface tension in water, and calculate the potential new pressure difference for a 0.6 mm bubble.
💡 Hint: Check temperature tables for surface tension values.
Challenge and get performance evaluation