- #1
Lee
- 56
- 0
When doing calculations, should pressure be in atm or Pa? (looking for answers in joules)
The unit atm (atmosphere) is a measurement of pressure commonly used in everyday contexts, while Pa (Pascal) is the standard unit of pressure in the International System of Units (SI). 1 atm is equal to 101,325 Pa.
Atm is typically used for low pressure measurements (e.g. atmospheric pressure) while Pa is used for higher pressure measurements (e.g. in laboratory experiments). It is important to use the appropriate unit depending on the scale of the pressure being measured.
Yes, there are many other units of pressure including bar, mmHg, and psi. However, atm and Pa are the most commonly used in scientific calculations.
To convert from atm to Pa, multiply the number of atm by 101,325. To convert from Pa to atm, divide the number of Pa by 101,325.
Atm and Pa are both accurate units of pressure, but Pa is considered to be more precise as it is the standard unit in scientific calculations. However, for most everyday purposes, the difference in accuracy between the two units is negligible.