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16 May, 05:12

A sound wave travels through air. In which regions are air molecules the least dense?

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  1. 16 May, 07:57
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    The atmospheric pressure is an indicator how dense is the air. at higher altitude where the atmospheric pressure is low is where the air is least dense. one proof is that mountain climbers needs oxygen tank at higher altitude because air is less so as well as the oxygen present
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