The surface of the earth is at the bottom of an atmospheric sea. The standard atmospheric pressure po is measured in various units:
1 atmosphere = 760 mmHg = 29.92 inHg = 14.7 lb/in² = 101325 Pa = 1013.25 mbar = 1013.25 hPa.
Average pressure at sea level is 1013.25 mbar
6.7something depending on atmospheric pressure (colder / higher pressure air, SG gets higher) Avgas 100LL is about 6.0 pounds per gallon at about 60 degrees F. And at sealevel.
Because the air pressure is lower then at sealevel, the boiling temperature of the water is lower. Unless you have a (high) pressure cooker.
I think at sealevel and standard conditions the partial pressure of hydrogen is nearly zero (~0 Pa).
No, it changes with the tides.
mussurie
The surface of the earth is at the bottom of an atmospheric sea. The standard atmospheric pressure po is measured in various units: 1 atmosphere = 760 mmHg = 29.92 inHg = 14.7 lb/in² = 101325 Pa = 1013.25 mbar = 1013.25 hPa.
sealevel (pacific ocean)
Yes, air pressure is lower at higher altitudes.
90hp to the wheel @ sealevel
No, pressure is higher in the arteries.
There are two factors that affect gas pressure. These factors are temperature and volume. Higher volume means lower pressure. Higher temperature means higher pressure.