Fundamental Constants

Question 1

Speed of Light (c)~

Answer 1

Equivalent to:

2.998 x 10^8m sec^-1

Or

3.076 x 10^-7 Mpc yr^-1

Question 2

Reduced Planck Constant (h-bar)~

Answer 2

Formula~
h=h/2pi

Equivalent to:
1.055 x 10^-34 m^2 kg sec^-1

Question 3

Boltzmann Constant (kB)~

Answer 3

Equivalent to:

1.381 x 10^-23J K^-1

Or

8.619 x 10^-5eV K^-1

Question 4

Radiation Constant~

Answer 4

Formula~

a=pi^2kB^4/15h^3c^3

Equivalent to:

7.565 x 10^-16J m^-3 K^-4

Question 5

Electron Mass-energy~

Answer 5

Formula~

Me c^2

Equivalent to:

0.511 MeV

Question 6

Newtons Gravitational Constant (G)~

Answer 6

Equivalent to:

6.672 x 10^-11m^3kg^-1sec^-2