which is the si unit for pressure? pa torr psi inhg

QUESTION IMAGE

Question

which is the si unit for pressure?

pa
torr
psi
inhg

Explanation:

Response

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Identify the definition of pressure and its SI unit

\[
\text{Pressure } (P) = \frac{\text{Force } (F)}{\text{Area } (A)}
\]
The SI unit for force is the Newton (\(\text{N}\)) and for area is the square meter (\(\text{m}^2\)). Therefore, the SI derived unit for pressure is:
\[
1\text{ N/m}^2 = 1\text{ Pascal } (\text{Pa})
\]

Evaluate the given options

\(\text{Pa}\) (Pascal): The official SI derived unit for pressure.
\(\text{Torr}\): A non-SI unit of pressure based on an absolute scale (equal to \(1/760\) of a standard atmosphere).
\(\text{psi}\) (pounds per square inch): An imperial/US customary unit of pressure.
\(\text{inHg}\) (inches of mercury): A non-SI unit of pressure commonly used in meteorology.

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Answer: