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Which is more elastic- steel or rubber?


Steel is more elastic than rubber. Elasticity is measured by how much time a body takes to come back to it's original state after being deformed.

The Young's modulus of steel is greater than rubber. 
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Why we have to do work in stretching a wire?

A wire is cut to half of its original length. How will its Young's modulus change?

 Do elastomers follow Hook's law?

Graphite consists of planes of carbon atom, which are held by weak forces. What expectations can you make about its rigidity?

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