PHYSICAL QUANTITY

Pressure: formulas and units of measurement

Pressure: symbol p, unit Pa. Formulas and explanations for Mechanics, MCT and thermodynamics.

ppascal

KEY CONNECTIONS

Formulas

p = F / S

p = ρgh

p = (1/3)m₀n⟨v²⟩

p = (2/3)n⟨E⟩

p = nkT

pV = (m/M)RT

NOTATION

: Pressure is the force per unit surface area.
: Force is a measure of the interaction of bodies that changes their movement or shape.
: Area is the size of a surface or cross section.
: Density is the mass of a substance per unit volume.
: Gravity acceleration is the acceleration of a body under the influence of gravity without taking into account the resistance of the medium.
: Height - vertical distance from the selected level.
: The mass of one particle is the mass of an individual molecule or atom of a substance.
: Concentration is the number of particles per unit volume.
: Speed is the speed and direction of change in body position.
: The average kinetic energy of a particle is the average energy of thermal motion of one particle.
: Boltzmann's constant is the coefficient of correlation between temperature and particle energy.
: Temperature is a measure of the thermal state of the body.
: Volume is the size of the area of space occupied by a body.
: Mass is a scalar physical quantity that is a measure of the inertia of a body.
: Molar mass is the mass of one mole of a substance.
: The universal gas constant is the coefficient of connection between the parameters of an ideal gas.

THEORY

PRACTICE

Topics in order: the concepts, quantities and formulas of a lesson with explanations and examples.

Statements, answer options and a detailed walkthrough for every topic of the course.

A 10-question check-up, exercises with answer checking, and saved progress.