That’s a hyper local measurement, and temperature dependant.
replyYou’d sure notice if the air in your kitchen was swooshing around at 671 miles per hour.
It squeezes me with approximately the weight of an elephant sitting on my chest. But humans are adapted to this and don't notice. It helps that the insides of my lungs are being squeezed outwards by the same force. Otherwise I surely couldn't breathe.
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