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A glass column is filled with mercury and inverted in a pool of mercuryThe mercury column stabilizes at a height of 735 mm above the pool of mercuryWhat is the pressure of the atmosphere?
The height of the mercury column in the tube represents the balance between the atmospheric pressure pushing down and the pressure exerted by the column of mercury pushing up. With a height of 735 mm, the atmospheric pressure can be calculated as 735 mm Hg or 735 torr.
What happens when the mercury in barometer or manometer is replaced by water or any other less dense liquid than water?
Since water is lighter than mercury, this means the height will differ. The denser (high relative density) the fluid, the shorter the height. If the fuild is light such as water its height will be much higher than that of mercury. Also, the denser the material is the higher the pressure.
A long glass tube sealed at one end that is filled with water has an inner diameter of 10 mm the tube and an atmospheric pressure is 755 mmHg how high is the column of water?
The atmospheric pressure of 755 mmHg can support a column of water up to 10.3 meters high. This is calculated using the equation h = (P / ρ*g), where P is the atmospheric pressure, ρ is the density of water, and g is the acceleration due to gravity.
If a barometer reads 535 mm Hg what is the atmospheric pressure expressed in centimeters of mercury?
mmHg represents the height of a column of mercury (Hg) in millimeters (mm) (as opposed to inches of mercury (inHg)). Since there are 10 mm (millimeters) in a centimeter, simply divide the mmHg by 10 and you find that 535mmHg is 53.5 centimeters Hg (cHg?).
What height would be maintained by a column of water inverted in a dish of water at sea level?
water is 1/13.5 as dense as mercury.Therefore, since mercury maintains a height of 760 mm at sea level:760/13.5 = 10,260 mm, or 10.26 meters
A decrease in the height of a column in a mercury barometer means that?
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.
Why does the height of the liquid column in a barometer changes as atmospheric pressure changes?
Pressure tendancies measure short term weather. The mercury in a barometer will rise with atmospheric pressure denoting fairer weather and a fall in barometric pressure warns of inclement weather.
Why does the height of the column in a barometer changes as atmospheric pressure changes?
As the atmospheric pressure changes, the force pushing on the surface of the liquid changes. Therefore,the height of the liquid in the tube increases as the atmospheric pressure increases.
What does Mercury borometer measure?
A mercury barometer measures atmospheric pressure by determining the height of a column of mercury that is supported by atmospheric pressure in a closed tube. By observing changes in this column height, meteorologists can track changes in atmospheric pressure over time.
What does a decrease in the height of the mercury column usually indicate on a barometer?
low pressure system and stormy weather
What would happen to a mercury barometer when the air pressure is getting lower?
The height of the column of mercury would be lower.
If a mercury barometer were carried up a mountain how would you expect the height of mercury column to change?
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.
Why must a barometer be place where are no temperature extremes?
The height of the mercury column is used to measure atmospheric pressure. If the barometer is also subjected to high temperatures, the thermal expansion of the mercury column will indicate a higher pressure than is really the case. This will make the barometer readings useless.
A decrease in the height of a column in a mercury borrow meter means what?
A decrease in the height of the mercury column in a barometer indicates a drop in atmospheric pressure. This can occur due to changes in weather systems, such as the approach of a low-pressure system, which is often associated with cloudy or rainy conditions. Conversely, an increase in the column height would indicate rising atmospheric pressure.
How a Mercury barometer functions?
A Mercury barometer functions by measuring atmospheric pressure using a column of mercury in a glass tube. The tube is inverted into a reservoir of mercury, and as atmospheric pressure changes, it either pushes the mercury up or allows it to fall within the tube. The height of the mercury column, typically measured in millimeters or inches, corresponds to the atmospheric pressure, with higher columns indicating greater pressure. This device effectively translates pressure variations into measurable height differences of the mercury.
What measures a barometer with Mercury?
A barometer that uses mercury measures air pressure by monitoring the height of the mercury column in a tube. As air pressure changes, the mercury level rises or lowers in response. This instrument is called a mercury barometer.
When air pressure increases the liquid in a Mercury barometer what?
When air pressure increases, it exerts greater force on the surface of the mercury in the barometer. This additional pressure causes the mercury to rise higher in the glass tube, indicating a higher atmospheric pressure. Conversely, if the air pressure decreases, the mercury level falls. Thus, the height of the mercury column in the barometer is directly related to the atmospheric pressure.
