Handbook of quantities

Constant Symbol Numerical value Gravitational constant G 6.6720·10 -11 N·m 2 ·kg -2 Speed of light in vacuum c 2.99792458·10 8 m·s -1 Magnetic constant μ 0 4π·10 -7 H·m -1 = 1.25663706144·10 -6 H·m -1 Electric constant ε…

Constant Symbol Numerical value Astronomical unit (mean distance of the Earth from the Sun) AU 1.49597870·10 11 m Parsec pc 3.085678·10 16 m Light year ly 9.460530·10 15 m Mass of the Sun M Ο 1.989·10 30 kg Radius of the…

Units of physical quantities 1 Å = 10 -10 m = 10 -8 cm = 10 -4 µm = 10 -1 nm 1 rad = 57°17`44.8`` = 53.3° = 3.44·10 3 ` = 2.06·10 5 `` 1 g/cm 3 = 10 3 kg/cm 3 = 1 t/m 3 1 dyn = 10 -5 N = 1.02·10 -9 kgf 1 atm = 1.01·10 5 …

Besides physics, chemistry is one of the compulsory subjects at school and in the first years of many university courses.

Physics formulas are absolutely essential: armed with them, anyone who has decided to study this science can feel entirely at home in the world of physics.

Physics, like a person, has a language of its own.

Symbol Measured in Description S m distance travelled v m/s velocity t s time x m coordinate a m/s 2 acceleration ω s -1 angular velocity T s period ν Hz frequency ε s -2 angular acceleration R m radius

Symbol Measured in Description p Pa pressure V m 3 volume T K temperature N - the number of molecules m kg mass μ kg/mol molar mass ν mol amount of substance U J the internal energy of the gas Q J quantity of heat η - ef…

The addition of oscillations:

Atomic physics:

1 mile = 7 versts = 7.4676 km 1 verst = 500 sazhens = 1.0668 km 1 sazhen = 3 arshins = 7 feet = 2.1336 m 1 arshin = 16 vershoks = 28 inches = 0.7112 m 1 vershok = 1.75 inches = 44.45 mm 1 foot = 12 inches = 0.3048 m 1 in…

Desyatina, economic (a measure of land area).

Letters Letter name A α alpha B β beta Γ γ gamma Δ δ delta E ε epsilon Z ζ zeta Η η eta Θ θ theta I ι iota K κ kappa Λ λ lambda M μ mu N ν nu Ξ ξ xi O ο omicron Π π pi Ρ ρ rho Σ σς sigma Τ τ tau Υ υ upsilon Φ φ phi Χ χ c…

Mechanical quantities Name Symbol Weight G, P, W Time t Height h Pressure p Diameter d Length l Path length s Amount of substance ν, n Momentum p Stiffness coefficient k Safety factor k, n Efficiency η Coefficient of rol…

Acoustic quantities Name Symbol Wavelength λ Sound power P Sound energy W Sound intensity I Speed of sound c Frequency ν, f

Thermal quantities and quantities of molecular physics Name Symbol Absolute humidity a Gas constant (molar) R Quantity of heat Q Efficiency η Relative humidity φ Relative molecular mass M r Avogadro constant (number) N A…

Units of time s Ms d h min µs ns 1 s 1 10 -6 1.16·10 -5 2.78·10 -4 1.67·10 -2 10 6 10 9 1 Ms 10 6 1 11.6 278 1.67·10 4 10 12 10 15 1 d 86 400 8.64·10 -2 1 24 1440 8.64·10 10 8.64·10 13 1 h 3 600 3.6·10 -3 0.04167 1 60 3.…

Units of length m km cm mm μm nm 1 m 1 10 -3 100 10 3 10 6 10 9 1 km 10 3 1 10 5 10 6 10 9 10 12 1 cm 0.01 10 -5 1 10 10 4 10 7 1 mm 10 -3 10 -6 0.1 1 10 3 10 6 1 μm 10 -6 10 -9 10 -4 10 -3 1 10 3 1 nm 10 -9 10 -12 10 -7…

Electrical and magnetic quantities Name Symbol Permittivity of vacuum (electric constant) ε 0 Inductance L Coefficient of self-induction L Transformation ratio n Magnetic induction B Permeability of vacuum (magnetic cons…