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Why does a plastic bag make crunching sounds when we crush it? What energy is getting converted to noise here?

Asked by krrazypassions (1355points) May 13th, 2011

Are some molecular bonds breaking to give out such a noise? And why don’t we see tiny light sparks (scintillations) instead of the crunching noise? it would look nice :) The noise can be very irritating at times!

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