Question

$1$ atmosphere means how many Pascal?

Answer 1

As we know that atmosphere is the unit of pressure and sometimes known as the standard pressure which is equal to $1.01325$ bar or $760$ torr or $760$mmHg etc and this pressure is almost equal to the atmospheric pressure of Earth at sea level.

Complete Step by step answer: As we have learnt that $1$ atmosphere or the standard condition of pressure is the pressure exerted by the mass of air in the atmosphere acting on $1\;c{m^2}$ area and is equal to that of many units of pressure which we can show by this table:
$1\;atm = 1.01325\;bar = 760\;torr = 760\;mmHg = 760\;cmHg = {10^5}Pascal = {10^5}N{m^{ - 2}}$
Pascal is the universally accepted or S.I. unit of pressure.

Additional information Some uses of Pascal unit in different fields:
-It is used to quantify the internal pressure, Young’s modulus, stress as well as the tensile strength.
-It is used by Geophysicists in gigapascal (GPa) to measure the stress and pressure of tectonic plates within Earth.
-It is used in medical fields where tissue stiffness is measured with ultrasound or magnetic resonance imaging which displays the pressure or Young’s modulus in Kilopascals (KPa).
-In engineering field, it is used to measure the tensile strength as well as compressive strength of various materials and used in terms of megapascals (MPa).
-Sound pressure can also be measured using Pascals which is equal to $94$decibel sound pressure level

Note: Pascal the standard unit of pressure is used all over the world and in humans also it is used as a measure of normal blood pressure which can be expressed as less than $16.0$ kPa systolic blood pressure and in terms of diastolic blood pressure, it is less than $10.7$kPa.