Question
Download Solution PDFWhat is the atmospheric pressure at sea level?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFThe correct option is 2
At sea level, under average conditions, the atmospheric pressure is approximately 14.7 pounds per square inch (psi).
Key Points
Atmospheric Pressure
- Atmospheric pressure is the pressure at any point on the surface of the earth due to the weight of the column of air above that point.
- Air is an extremely compressible gas having its weight.
- The pressure exerted by air due to its weight is called atmospheric pressure on the Earth’s surface.
- The Atmospheric pressure at sea level is 1 atm.
- Atmospheric pressure is commonly measured with a barometer.
- Atmospheric pressure is described by meteorologists as how high the mercury rises.
- The standard (symbol: atm) is a unit of atmospheric pressure.
- The value of what we call standard sea-level pressure is 760 mm of mercury, 1013.25 millibars, or simply one standard atmosphere which is 101.325 kilopascals or 1.01325 × 105 Newton / m2.
- The approximate value of atmospheric pressure at sea level is
105 Newton / m2.
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