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what is the meaning of ATM and bar in chapter matter in our surroundings??
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what is the meaning of ATM and bar in chapter matter in our surroundin...
ATM refers to atmospheric pressure(the pressure exerted by the weight of the atmosphere).

A bar is a pressure unit defined as 100 kilopascals. This makes one atmosphere nearly equal to one bar.
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what is the meaning of ATM and bar in chapter matter in our surroundings??
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