Question

Atmospheric pressure at sea level is:
A) 0.76 cm of Hg Column
B) 76 m of Hg Column
C) 76 cm of Hg Column
D) 76 cm of water Column

Answer 1

Hint:It is the pressure applied on a surface by the air above it as gravity pulls it to Earth. Pressure around us is also atmospheric pressure and pressure has SI unit Pascal so convert in cm of Hg.

Complete step by step solution:
Air pressure is usually estimated with an indicator. In a gauge, a section of mercury in a glass tube rises or falls as the heaviness of the climate changes. Meteorologists portray the climatic weight by how high the mercury rises.

An air (atm) is a unit of estimation equivalent to the normal gaseous tension at a drift level at a temperature of 15 degrees Celsius (59 degrees Fahrenheit). One climate is 1,013 millibars, or 760 millimeters (29.92 inches) of mercury.

 At sea level, the air pressure is 76 mm of hg
\[\]\[{\rm{1 atm = 76 cm}}\] of Hg section

Additional Information: Climatic weight is the power per unit zone applied by the heaviness of the environment. To gauge that weight, meteorologists utilize an indicator. It was Evangelista Torricelli, an Italian physicist and mathematician who demonstrated in 1643 that he could gauge the air against a segment of mercury. He really estimated pressure changing over it straightforwardly to weight. The instrument Torricelli planned was the absolute first indicator. The open finish of a glass tube is set in an open dish of mercury. Air pressure powers the mercury to ascend the cylinder. (All things considered) to a stature of 29.92 inches or 760 millimeters.

Note: Hikers use packaged oxygen when they rise high pinnacles. They likewise set aside effort to become accustomed to the elevation in light of the fact that rapidly moving from higher strain to bring down weight can cause decompression disorder. Decompression ailment, likewise called "the curves", is additionally an issue for scuba jumpers who rise to the top excessively fast.

Environmental weight is a pointer of climate. At the point when a low-pressure framework moves into a territory, it as a rule prompts darkness, wind, and precipitation. High-pressure frameworks normally lead to reasonable, quiet climate.The air around you has weight, and it presses against all that it contacts. That weight is called air weight, or gaseous tension.