PHYSICAL QUANTITY
Density: formulas and units of measurement
Density: symbol ρ, unit kg/m³. Formulas and explanations for Mechanics, MCT and thermodynamics.
\rhoρ\frac{\text{кг}}{\text{м}^3}kilogram per cubic metre
KEY CONNECTIONS
Formulas
\rho=\frac{m}{V}ρ = m / V
\rho=m_0nρ = m₀n
p=\rho ghp = ρgh
F_A=\rho gVFₐ = ρgV
pM=\rho RTpM = ρRT
p=\frac{1}{3}\rho\left\langle v^2\right\ranglep = (1/3)ρ⟨v²⟩
NOTATION
Quantities in formulas
- \rho
- Density is the mass of a substance per unit volume.
- m
- Mass is a scalar physical quantity that is a measure of the inertia of a body.
- V
- Volume is the size of the area of space occupied by a body.
- m_0
- The mass of one particle is the mass of an individual molecule or atom of a substance.
- n
- Concentration is the number of particles per unit volume.
- p
- Pressure is the force per unit surface area.
- g
- Gravity acceleration is the acceleration of a body under the influence of gravity without taking into account the resistance of the medium.
- h
- Height - vertical distance from the selected level.
- F_A
- Archimedes' force is the buoyant force of a liquid or gas.
- M
- Molar mass is the mass of one mole of a substance.
- R
- The universal gas constant is the coefficient of connection between the parameters of an ideal gas.
- T
- Temperature is a measure of the thermal state of the body.
- v
- Velocity is the rate and direction of change of a body's position.
THEORY
Related Lessons
PRACTICE
Related tasks
DIRECTORY