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Physics in Daily Life

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Opening a fresh jar of pickles can be challenging. If you are somebody who struggles opening jars, don't be discouraged, physics can help. If you run the jar under hot water, the lid will become easier to turn. But, why? Metal has a higher coefficient of expansion than glass does. So, as the jar stays under the hot water, the metal expands a tiny bit, and the glass stays the same. There is no longer a need to workout, just run your tricky jars under the faucet, wait a minute, and let physics take care of your problems.

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