Physical Constants (SI Units) Flashcards
Learn the values of fundamental physical constants to 3 decimal places. Useful for back-of-the-envelope estimation.
1
Q
Proton mass
A
1.67 × 10⁻²⁷ kg
2
Q
Electron mass
A
9.109 × 10⁻³¹ kg
3
Q
Elementary charge
A
1.60 × 10⁻¹⁹ C
4
Q
Permittivity of free space
A
8.85 × 10⁻¹² F/m
5
Q
Coulomb’s constant
A
8.99 × 10⁹ N·m²/C²
6
Q
Universal gravitational constant
A
6.67 × 10⁻¹¹ N·m²/kg²
7
Q
Boltzmann’s constant
A
1.38 × 10⁻²³ J/K
8
Q
Avogadro’s constant
A
6.022 × 10²³ mol⁻¹
9
Q
Ideal gas constant
A
8.314 J/mol/K
10
Q
Planck’s constant
A
6.626 × 10⁻³⁴ J/Hz
11
Q
Reduced Planck constant
A
1.05 × 10⁻³⁴ J·s
12
Q
Earth mass
A
5.97 × 10²⁴ kg
13
Q
Earth radius
A
6.38 × 10⁶ m
14
Q
Speed of light
A
2.998 × 10⁸ m/s
