Question

Explain why
the metal lid on a glass jar can be an screw easily if the jar is inverted for a few second with the late in very hot water ​

Answer 1

Answer:

If we assume it is your average glass pickle-jar with a metal top than heating up the jar will loosen the lid because the metal conducts more heat than the glass. ... As the lid loosens the normal force the glass produces to push back on the lid is decreased so the Frictional force is lowered.

Explanation:

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