PHYSICAL QUANTITY

Density: formulas and units of measurement

Density: symbol ρ, unit kg/m³. Formulas and explanations for Mechanics, MCT and thermodynamics.

ρkilogram per cubic meter

KEY CONNECTIONS

Formulas

ρ = m / V

ρ = m₀n

p = ρgh

Fₐ = ρgV

pM = ρRT

p = (1/3)ρ⟨v²⟩

NOTATION

: Density is the mass of a substance per unit volume.
: Mass is a scalar physical quantity that is a measure of the inertia of a body.
: Volume is the size of the area of space occupied by a body.
: 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.
: Pressure is the force per unit surface area.
: 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.
: Archimedes' force is the buoyant force of a liquid or gas.
: 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.
: Temperature is a measure of the thermal state of the body.
: Speed is the speed and direction of change in body position.

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.