Question

What is atmospheric pressure due to?​

Answer 1

ᴇʟʟᴏ ᴍᴀᴛᴇ,

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Atmospheric pressure is caused by the gravitational attraction of the planet on the atmospheric gases above the surface, and is a function of the mass of the planet, the radius of the surface, and the amount and composition of the gases and their vertical distribution in the atmosphere.

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Answer 2

Atmospheric pressure, also known as barometric pressure, is the pressure within the atmosphere of Earth. The standard atmosphere is a unit of pressure defined as 101,325 Pa, which is equivalent to 760 mm Hg, 29.9212 inches Hg, or 14.696 psi.

Pressure (p) , mass (m) and the acceleration due to gravity (g) are related by P = $\frac{F}{A} = \frac{(m*g)}{A}$ where A is surface area.

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