Physics, 14.06.2020 10:57 ayandjay01

A mercury barometer, with a tube of uniform diameter and length 840 mm above the mercury
level in the reservoir, reads 740 mm on a day when
the atmospheric pressure is 760 mm of mercury
Estimate the pressure of the atmosphere on a day
when it reads 720 mm. Assume the average
temperature is the same on both days.

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