Value of atmospheric pressure at sea level
Answers
Answer:
about 14.7 pounds per square inch
(atm) unit of measurement equal to air pressure at sea level, about 14.7 pounds per square inch. Also called standard atmospheric pressure. force per unit area exerted by the mass of the atmosphere as gravity pulls it to Earth.
Answer:
Atmospheric pressure is the pressure exerted by the earth's atmosphere at any given point, being the product of the mass of the atmospheric column of the unit area above the given point and of the gravitational acceleration at the given point.
It has a value of standard or normal atmospheric pressure, equivalent to the pressure exerted by a column of mercury 29.92 inches(760mm) high, or 1013 millibars(101.3kPa).
At sea level the atmospheric pressure is approximately 1kg/cm
2
(14.7 pounds per square inch), which will cause a column of mercury in a mercury barometer to rise 760mm.