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Sometimes on especially hot days, a wooden door, that opens and closes just fine during cooler months, will be hard to open and close. Why is the door hard to open and close on hot days? Hint: Think about the difference in the spacing of molecules in solids that are heated and cooled.

I really need to turn in my assignment bc it's missing rn, so thank you so much if you give me the answers! ​

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The molecules in the solid door expands on hot days causing the difficulty in closure while the molecules contract on cooler days, causing the door to close just fine.

One of the effects of heat is expansion of solids. Once a substance is heated, its molecules spread out. In the case of a solid door, when the molecules in the door are heated on a hot day, they expand, causing difficulty when closing the door.

However, on a cold day, the molecules of the door contract and the door closes just fine without any difficulty.

Learn more: https://brainly.com/question/9550868

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