constants

Question 1

Speed of light, c

Answer 1

2.99792458 x 108 m s-1

Question 2

Permeability of vacuum, (Magnetic constant)

Answer 2

12.57x 10-7 H M-1 (4pie x10-7 H M-1)

Question 3

Permittivity of vacuum, (Electric constant)

Answer 3

8.854187817 x 10-12 F m-1

Question 4

Gravitational constant, G

Answer 4

6.67259 x 10-11 N m2 kg-2

Question 5

Planck’s constant, h

Answer 5

6.626 x 10-34 J s

Question 6

Elementary charge, e

Answer 6

1.602 x 10-19 C

Question 7

Magnetic flux quantum, φo

Answer 7

2.06783461 x 10-15 Wb

Question 8

Rydberg constant, R∞

Answer 8

1.0973731 x 107 m-1

Question 9

Electron mass, me

Answer 9

9.11 x 10-31 kg

Question 10

Proton mass, mp

Answer 10

1.673 x 10-27 kg

Question 11

Neutron mass, mn

Answer 11

1.675 x 10-27 kg

Question 12

Avogadro constant, L

Answer 12

6.022 x 1023 mol-1

Question 13

Atomic mass constant (unit)

Answer 13

1.66 x 10-27 kg

Question 14

Faraday constant, F

Answer 14

9.6485 x 104 C mol-1

Question 15

Molar gas constant, (Ideal gas constant) R

Answer 15

8.314510 J mol-1 K-1

Question 16

Lodschmidst Number

Answer 16

2.6868 x 10-25 per meter cube

Question 17

Boltzmann constant, k

Answer 17

1.38 x 10-23 J K-1

Question 18

Stefan-Boltzmann constant, σ

Answer 18

5.67 x 10-8 W m-2 K-4