10TH GRADE · HYDROSTATICS
Pressure in liquids and gases
Force pressure, atmospheric and hydrostatic pressure.
The entire theory of the lesson is collected here; you can read it without an account. In interactive mode, the same theory appears as cards, followed by questions. with checking the answer and task, and progress is saved.
Basic Concepts
Hydrostatic pressure
The pressure of a fluid at rest created by the weight of the layers above.
The deeper the point and the denser the liquid, the greater the pressure; at the same depth in a fluid at rest it is the same.
Physical quantities
Pressure
Normal force per unit area.
Unit: pascal ·
Normal atmospheric pressure
Accepted reference value of atmospheric pressure.
Unit: pascal ·
Lesson formulas
Pressure determination
Pressure is equal to the force perpendicular to the surface divided by the area.
Definition of pascal
One pascal is equal to one newton per square meter.
Newton per square centimeter
One newton per square centimeter is equal to ten thousand pascals.
Technical significance of the atmosphere
One atmosphere is approximately equal to one hundred thousand pascals.
Normal atmospheric pressure
Normal atmospheric pressure is one hundred one thousand three hundred twenty-five pascals.
Hydrostatic pressure
The pressure of a liquid column depends on the density, depth and acceleration of gravity.
Related formulas
The same formulas in the reference, with symbols and units.