What is Pressure ?¿
Answers
Answer:
Pressure (symbol: p or P) is the force applied perpendicular to the surface of an object per unit area over which that force is distributed.:445[1] Gauge pressure (also spelled gage pressure)[a] is the pressure relative to the ambient pressure.
Pressure
Common symbols
p, P
SI unit
Pascal [Pa]
In SI base units
1 N/m2, 1 kg/(m·s2), or 1 J/m3
Derivations from
other quantities
p = F / A
Dimension
M L−1 T−2
A figure showing pressure exerted by particle collisions inside a closed container. The collisions that exert the pressure are highlighted in red.
Pressure as exerted by particle collisions inside a closed container
Various units are used to express pressure. Some of these derive from a unit of force divided by a unit of area; the SI unit of pressure, the pascal (Pa), for example, is one newton per square metre (N/m2); similarly, the pound-force per square inch (psi) is the traditional unit of pressure in the imperial and U.S. customary systems. Pressure may also be expressed in terms of standard atmospheric pressure; the atmosphere (atm) is equal to this pressure, and the torr is defined as 1⁄760 of this. Manometric units such as the centimetre of water, millimetre of mercury, and inch of mercury are used to express pressures in terms of the height of column of a particular fluid in a manometer.
Answer:
In mathematics, the logarithm is the inverse function to exponentiation. That means the logarithm of a given number x is the exponent to which another fixed number, the base b, must be raised, to produce that number x.
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