Waching daily Oct 2 2018

We continue with the pressure. What is pressure?

The pressure is the scalar quantity that relates the force, with the area on which it acts.

When on a flat surface area A force is applied perpendicular F

uniform, the pressure p is given as follows:

P equals force over the area. The pressure is directly proportional to

force, ie, the greater the force applied to a constant larger area the pressure.

It is also inversely proportional to the area, ie, a larger area when the force

applied is constant, the lower the pressure. In the International System of Units, the

pressure is measured in a unit called a derived pascal (Pa), which is equivalent

a In the International System of Units, the pressure is measured in a unit derived

It called pascal (Pa), which is equivalent to the perpendicular force of one Newton (N),

acting uniformly in a square meter (sqm).

Let equivalence: an atmosphere equivalent to 10 to 1,013 for the fifth pascals.

Atmosphere may be abbreviated as atm, an atmosphere equivalent to 760 mmHg. What does it mean

mm hg? The first m milli means, and the second

m is meters, and mercury hg means, then one atmosphere pressure equivalent

760 millimeters of mercury, also one atmosphere pressure equivalent to 760 torr.