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Atmospheric pressure is measured by using a barometer The barometer is a fairly simple device A beaker is filled with mercury and an open glass tube is immersed in it A vacuum pump is connected to

Atmospheric pressure is measured by using a barometer. The barometer is a fairly simple device. A beaker is filled with mercury and an open glass tube is immersed in it. A vacuum pump is connected to the end of the tube, all the air is removed, and the end is sealed. There will then be an unbalanced force in the mercury that tends to push it up the tube. The mercury will rise to such a height that the pressure due to mercury is equal to the pressure of the atmosphere. To what height will the mercury rise at atmospheric pressure (1 atmosphere = 100,000 N/m2)? The density of mercury is 13,600 kg/m3 (13.6 g/cm3).

 

Jun 19 2020 View more View Less

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