PHYSICAL QUANTITY
Mass: formulas and units of measurement
Mass: symbol m, unit kg. Formulas and explanations for Mechanics, MCT and thermodynamics, Modern physics.
mm\text{кг}kilogram
KEY CONNECTIONS
Formulas
m=\rho Vm = ρV
F=maF = ma
m=k_{\text{эл}}Itm = kэлIt
m_0=\frac{M}{N_A}m₀ = M / Nₐ
\nu=\frac{m}{M}ν = m / M
m=\frac{m_0}{\sqrt{1-\frac{v^2}{c^2}}}m = m₀ / √(1 − v²/c²)
pV=\frac{m}{M}RTpV = (m/M)RT
T=2\pi\sqrt{\frac{m}{k}}T = 2π√(m/k)
NOTATION
Quantities in formulas
- m
- Mass is a scalar physical quantity that is a measure of the inertia of a body.
- \rho
- Density is the mass of a substance per unit volume.
- V
- Volume is the size of the area of space occupied by a body.
- F
- Force is a measure of the interaction of bodies that changes their movement or shape.
- a
- Acceleration is the rate of change of a body's velocity.
- k_{\text{эл}}
- Electrochemical equivalent is the mass of a substance released by a unit charge.
- I
- Current strength is the charge passing through the cross section of a conductor per unit time.
- t
- Time is a quantity characterizing the duration and sequence of events.
- m_0
- The mass of one particle is the mass of an individual molecule or atom of a substance.
- M
- Molar mass is the mass of one mole of a substance.
- N_A
- Avogadro's constant is the number of particles in one mole of a substance.
- \nu
- Quantity of a substance is a measure of the number of particles in a sample of a substance.
- m_0
- Rest mass is the mass of an object in a reference frame where it is stationary.
- v
- Velocity is the rate and direction of change of a body's position.
- c
- The speed of light in a vacuum is the maximum speed of propagation of interactions.
- p
- Pressure is the force per unit surface area.
- 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.
- T
- A period is the time of one complete repetition of a process.
- k
- The stiffness of a spring is a characteristic of its resistance to deformation.
THEORY
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