Since atmospheric pressure at sea level is about 100 kPa (14.7 psi the absolute pressure in the tire is therefore about 320 kPa (46 psi).For instance, if the atmospheric pressure is 100 kPa (15 psi a gas (such as helium) at 200 kPa (29 psi) (gauge) (300 kPa or 44 psi absolute) is 50 denser than the same gas at 100 kPa (15 psi) (gauge) (200 kPa or 29 psi absolute).The CGS unit of pressure is the barye (Ba equal to 1 dyncm2,.1 Pa.

The minister was under pressure to resign.The symbol for it is p.

If we enclose the gas within a container, we detect a pressure in the gas from the molecules colliding with the walls of our container.Some meteorologists prefer the hectopascal (hPa) for atmospheric air pressure, which is equivalent to the older unit millibar (mbar).The bottom of a boat is pushed upward by water pressure ( buoyancy ).