Question

Q. Why do steel contract and expand when season changes?

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Answer 1

Answer:

When an object covers unequal distances in equal intervals of time in a specified direction. If the direction of motion changes, it is said to be moving with a non-uniform or variable velocity

Explanation:

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Answer 2

Answer:

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Explanation:

What does heat do to metal? The expansion (or contraction) of any material is due to the kinetic energy of its atoms. When a material is heated, the increase in energy causes the atoms and molecules to move more and to take up more space— that is, to expand. This is true of even a solid such as a metal.

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