When anything is given heat it expands (thermal expension). Then why do rubber band in hot water 'contracts' to its original shape? Why it does not expand???
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because on heating the rubber molecules are closely packed and not free to move so rubber got shrink but it is opposite in other material
Ee3:
umm i dont get it... why a loose rubber band does shrink
this is a property of rubber on heating molecules of rubber get closer so overall decrease in the size of rubber
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