Review Note
Last Update: 02/06/2025 03:27 AM
Current Deck: AnKing-MCAT::MileDown's MCAT Decks::Physics and Math
PublishedCurrently Published Content
Text
Extra
Lecture Notes
Missed Questions
Pixorize
Additional Resources
Current Tags:
Pending Suggestions
Field Change Suggestions:
Extra
Commit #341155Its the reading that a pressure gauge would show when used to test the pressure of something
It is zero referenced against atmospheric pressure so if the gauge reads "0 atm" that means there is no pressure other than the existing atmospheric pressure.
flat tire is at an absolute pressure of 1.01×105Pa1.01×105Pa1, point, 01, times, 10, start superscript, 5, end superscript, P, a isn't really all that useful (since being at atmospheric pressure means your tire's flat). The extra pressure in the tire above atmospheric pressure is what will allow the tire to inflate and perform properly.
Because of this, most gauges and monitoring equipment use what is defined to be the gauge pressure PgaugePgaugeP, start subscript, g, a, u, g, e, end subscript . Gauge pressure is the pressure measured relative to atmospheric pressure. Gauge pressure is positive for pressures above atmospheric pressure, zero at atmospheric pressure, and negative for pressures below atmospheric pressure.