Numbers Flashcards
c
3e8 m/s
kB
1.4e-23 J/K
1 eV
1.6e-19 J
N_Avo
6e23
h
6.63e-34 J*s
hbar
1e-34 J*s
G
6.67e-11 N*m^2/kg^2
e
1.6e-19 C
m_electron
9.11e-31 kg
m_proton
1.7e-27 kg
1 kcal
4,200 J
1 amu
1.7e-27 kg
kB*T at room temp
1/40 * eV
1 inch
2.54 cm
radius earth
6.4e6 m
radius moon
1.7e6 m
radius sun
7e8 m
Cs hyperfine freq
9 GHz
Sr clock frequency
430 THz
eps_0
8.9e-12 C^2/N m^2
mu_0
4 pi e-7 T m/A
Stefan Boltzmann Constant
5.7e-8 W/m^2K^4
b : Wien Displacement constant
59 GHz/K
H_0 : Hubble constant
69.3 (km/s)/Mpc
Mpc : Megaparsec
3.1e19 km
Bohr radius
.5 angstrom
Height of everest
9 km
Elevation Duane
1.64 km
Circumference earth
40,000 km
alpha
1/137
mu_B (Bohr magneton)
14 GHz/T
Gauss to T
1 G = 0.1 mT
mu_N (Nuclear Magneton)
8 MHz/T
1 Ry
13.6 eV
pi
3.14
size nucleus
10 fm
speed sound in air
340 m/s
density water
1 g/cm^3
1 kW*hr in dollars
10 cents
air molecule speed room temp
500 m/s
energy covalent bond
few eV (6.3 for carbon)