The North American record for highest recorded barometric...

The North American record for highest recorded barometric pressure is $31.85$ in $\mathrm{Hg}$, set in 1989 in Northway, Alaska. Convert this pressure to each indicated unit.
a. $\mathrm{mmHg}$
b. $\mathrm{atm}$
c. torr
d. $\mathrm{kPa}$ (kilopascals)

Key Concepts

Pressure

Pressure is the physical quantity representing the force exerted per unit area. It is measured in various units depending on the context and is fundamental in fields such as physics, meteorology, and engineering.

Pressure Units

Pressure can be expressed in multiple units, including inches of mercury, millimeters of mercury (mmHg), torr, atmospheres (atm), and kilopascals (kPa). Each unit reflects a different scale and is used in different applications; some are based on the height of a mercury column while others are part of the International System of Units.

Inches of Mercury

Inches of mercury is a unit of pressure that represents the height of a mercury column sustained by atmospheric pressure. It is commonly used in meteorology for barometric pressure measurements and reflects a traditional way of expressing pressure.

Millimeters of Mercury (mmHg) and Torr

Millimeters of mercury (mmHg) and torr are units of pressure that are numerically equivalent. They indicate the height in millimeters of a mercury column that a given pressure can support, and are widely used in medical, meteorological, and scientific contexts.

Atmosphere (atm)

The atmosphere (atm) is a standardized unit of pressure defined as the typical pressure at sea level. It is used as a reference point in many scientific calculations and applications, making it a pivotal unit for comparing different pressure measurements.

Kilopascal (kPa)

The kilopascal (kPa) is a metric unit of pressure, where one kilopascal equals 1,000 pascals. As part of the International System of Units (SI), it is widely used in scientific, engineering, and meteorological work for its ease of integration with other SI units.

Unit Conversion

Unit conversion is the process of translating a measurement from one unit to another using precise conversion factors. It ensures that different units conveying the same physical quantity can be compared or combined correctly by preserving dimensional consistency.

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