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If the atmospheric pressure is 29.4 inches of mercury what is the corresponding pressure of mercury?
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∙ 13y ago
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What is the unit of measuring atmospheric pressure?
Millibars. Inches of mercury or feet of water
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?).
Why is mercury used in the liquid barometer and thermometer?
It is used in the barometer because it is the densest liquid known, requiring only 33 inches of mercury to indicate atmospheric pressure. Water on the other hand would require 39 feet to indicate the same pressure. It is used in thermometers for a different reason. The expansion of mercury is a stable amount. Meaning it changes in volume the same amount from 0 to 1 degrees as it does in volume from 100 to 101 degrees, making it a desirable fluid for scaling thermometers. Presently in the US it is illegal to manufacture these devices using mercury.
What Gas pressure values at sea level and 0 degrees celsius?
If you were at sea level, the weight of the air pressing down on you would be 1.03 kilograms per square centimeter.or 1013.25 millibars.
What happens if you use water instead of mercury in determination of atmospheric pressure?
I'm not sure if this answer is the kind of answer you're looking for, but basically, you would have to use a much larger amount of water than mercury to get an accurate reading of atmospheric pressure. This is because water is not nearly as dense as mercury, so it takes much less atmospheric pressure to raise the water up the tube in a water barometer. This results in water rising much more easily than mercury. Obviously, then, a water barometer would have to be much larger than a mercury one. Since mercury is more dense than water, mercury barometers are much smaller. So, if you put water in a mercury barometer instead of mercury, the reading you get would be way too high.Air pressure at sea level is about 14.7 pounds per square inch (psi) and can push a column of water almost 33 feet high, but it can only push mercury 30 inches high. Roughly, ever inch of mercury equals a foot of water.
What does the pressure units in weather mean?
It refers to the atmospheric pressure which, in this case, is measured in inches of Mercury on a mercury barometer
What does the pressure units 30.03 in weather mean?
It refers to the atmospheric pressure which, in this case, is measured in inches of mercury on a mercury barometer
What does the abbreviation Hg mean in meteorology?
Inches of mercury, as it relates to atmospheric pressure.
If the atmospheric pressure is 24.9 inches what is the pressure in mm Hg?
18,920 mm of mercury at 24.9 ATM
The atmospheric pressure is given as 29.4 inches of mercury what is the corresponding pressure in mm Hg?
The atmospheric pressure of 29.97 inch of mercury (32 °F) is 761.238123 millimeter Hg (0 °C) or 1.001629 atm. Scroll down to related links and use the nice calculator "Conversion of pressure or stress units".
What does a compound pressure gauge measure in?
The Compound Gauge measures above and below atmospheric pressure (in psig and inches of mercury).
What is the name for pressure caused by the weight of the atmosphere?
Simply put, atmospheric pressure is the force exerted on a measuring point by the weight of the air molecules on top of that point. Standard atmospheric pressure, measured at sea level at 59F or 15C, is used as a reference point and is equal to 29.92 inches of mercury or 1013 millibars of pressure.
Why is the value of atmospheric pressure compared to mercury?
Atmospheric pressure will support a column of mercury to about 760 mm. Mercurial air pressure is described as '760 mmHg'. As air pressure changes , the height of this column will also change. If you did it with water, the column would have to be about 34 feet (10.2 metres) in height.
What does mm-Hg means in nursing terms?
millimeters mercury? ____________________ "mm Hg" is the abbreviation for "Millimeters of Mercury. It is a measure of blood pressure. Millimetres of mercury (Hg is the chemical sysmbol for mercury). This is normally a measurement of atmospheric pressure - the number of millimetres of mercury in a sealed glass tube supported by air pressure. Standard atmospheric pressure (101.325kilo Pascals) is equal to 29.92 inches of mercury (inHg) or 759.968 mmHg.
What is measured in inches of mercury?
Those are (somewhat outdated) pressure units.
Barometric pressure ground level?
Atmospheric pressure varies with altitude and air density. Average sea-level pressure is 101.325 kPa (1013.25 mbar) or 29.921 inches of mercury (inHg) or 760 millimeters of mercury (mmHg).
What is meant by atmospheric pressure is 1 ATM?
It just means that the pressure you're measuring is approximately the same as Earth's air pressure at sea level.
