Kineettisen kaasuteorian mukaan kaasun paineen synty aiheutuu hiukkasten (atomit, molekyylit yms.) trmilyst pintaan. These may seem like huge amounts, and they are, but life on earth has evolved under such atmospheric pressure. 1 bar 100 kPa 0,1 MPa 1 000 hPa 1 bar 1 at 1 kp/cm 2 (vastaa 10 000 mmvp) 1 bar 1 atm (vastaa 760 mmHg) 1 bar 750 mmHg 1 bar 14,5 psi Paineen olemus. Example: convert 15 bar to Pa: 15 bar 15 × 100000 Pa 1500000 Pa. At sea level, this pressure is roughly the same as that exerted by a full-grown African elephant standing on a doormat, or a typical bowling ball resting on your thumbnail. The atmosphere above us exerts a large pressure on objects at the surface of the earth, roughly equal to the weight of a bowling ball pressing on an area the size of a human thumbnail.Ī dramatic illustration of atmospheric pressure is provided in this brief video, which shows a railway tanker car imploding when its internal pressure is decreased.Ī smaller scale demonstration of this phenomenon is briefly explained.Ītmospheric pressure is caused by the weight of the column of air molecules in the atmosphere above an object, such as the tanker car. In fact, normal air pressure is strong enough to crush a metal container when not balanced by equal pressure from inside the container. Although the force of each collision is very small, any surface of appreciable area experiences a large number of collisions in a short time, which can result in a high pressure. Gas pressure is caused by the force exerted by gas molecules colliding with the surfaces of objects ( Figure 1). 550 Enthalpy (kJ/kg) Pressure (bar) Reference State: h 200 kJ/kg, s 1. Although we do not normally notice atmospheric pressure, we are sensitive to pressure changes-for example, when your ears “pop” during take-off and landing while flying, or when you dive underwater. the boiling point is above 100C and for pressure less than 760 mmHg (e. The earth’s atmosphere exerts a pressure, as does any other gas.
Choose a value between mmHg 0C from the pressure conversion table below, to obtain the converted value in Pa.
Moreover, how do you convert kPa to mmHg? This means that to convert mmHg to atm you should multiply your figure by 0.0013157896611399.įurthermore, what pressure in mmHg is equal to 1.4 atm? atm to mmhg conversion table: 0.01 atm = 7.6 mmHg Para fines prácticos (a 5 dígitos significativos) ellos son. I am sure you probably did that search before you posted this question s Torr y mmHg 0 ° C se consideran a menudo idénticos. One millimeter of mercury is equal to 0.0013157896611399 atmospheres. The standard atmosphere (symbol: atm) is a unit of pressure defined as 101325 Pa (1.01325 bar), equivalent to 760 mmHg (torr), 29.92 inHg and 14.696 psi. Millimeter of mercury ( mmHg) and atmosphere ( atm) are both units of pressure. Millibar (mb or mbar) There are 1,000 millibar in. Bar (bar) The bar is nearly identical to the atmosphere unit.
Solution: multiply the atm value by 760.0 mmHg / atm. A pressure that causes the Hg column to rise 1 millimeter is called a torr (you may still see the term 1 mm Hg used this has been replaced by the torr). equals 760.0 mm Hg, so there will be a multiplication or division based on the direction of the change.
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