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The pressure will support a column of mercury whose vertical height is 760mm.
The term mm Hg means millimeters of mercury; this is a measurement of barometric pressure (the pressure of air is measured in terms of the equivalent height of a column of mercury that would exert the same pressure). 1 mmHg is about 133 pascals.
The conversion factor of 12.6 is used to convert mercury pressure to water pressure because pressure is directly proportional to the density of the fluid. Since mercury has a density that is 13.6 times greater than water, the pressure exerted by a column of mercury will be 13.6 times greater than the pressure exerted by a column of water of the same height. Therefore, to convert mercury pressure to water pressure, we need to divide by the ratio of the densities, which is 13.6.
Water column head is expressed either as the height of the column ... 6 meters here ... or else as the pressure at the bottom ... 58.842 kPa here. 'Kg' can't be a unit of water column head, and the diameter of the column is irrelevant.
the atmospere can not support the greater height column and the column of mercury will drop to the level in which the atmospere can support
there is a decrease in atmospheric pressure. Atmospheric pressure is directly proportional to the height of the mercury column in a barometer. When the height decreases, it indicates that the pressure in the atmosphere is lower.
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air pressure is decreasing
The height of the Mercury column would decrease.
When air pressure increases, the mercury in a barometer rises.
low pressure system and stormy weather
The height of the Mercury column would decrease.
The height of the Mercury column would decrease.
The height of the Mercury column would decrease.
As a mercury barometer is taken up a mountain, the height of the mercury column would decrease. This occurs because atmospheric pressure decreases with altitude, leading to less force exerted on the mercury in the barometer. Consequently, the lower atmospheric pressure results in a shorter column of mercury being supported.