QQuestionEconomics
QuestionEconomics
Does it really help to run hot water over a tight metal lid on a glass jar before trying to open it?
Explain your answer.
6 months agoReport content
Answer
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Step 1Let's solve this problem step by step, explaining the scientific principle behind using hot water to open a tight jar lid.
Step 2: Understanding the Physical Principle
The effectiveness of running hot water over a tight metal lid is based on the principle of thermal expansion. Different materials expand at different rates when heated, which creates a key mechanism for loosening the lid.
Final Answer
Key Scientific Insight: The effectiveness depends on the temperature difference and the specific thermal expansion coefficients of the materials involved.
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