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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.
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.
Surface area of a cylinder (the column) = pi*diameter*height and measured in square units.
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
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air pressure is decreasing
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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The height of the Mercury column would decrease.
When air pressure increases, the mercury in a barometer rises.
The height of the Mercury column would decrease.
The height of the Mercury column would decrease.
The height of the Mercury column would decrease.
The height of the Mercury column would decrease.
A change in the material of the container holding the mercury does not cause the height of the mercury column to vary. The height of the mercury column is determined by the atmospheric pressure acting on the surface of the mercury in the container.