Kamis, 09 Juni 2011

Tetapan FisikA



Tetapan FisikA
 

Percepatan standar untuk gravitasi bumi           g      = 9,80655 m s-2 (tepat)
Bilangan Avogadro                                                 N0    = 6,022137 × 1023
Jari-jari Bohr                                                            a0    = 0,52917725 Å = 5,2917725 × 10-11 m
Tetapan Boltzman                                                  kB    = 1,38066 × 10-23 J K-1
Muatan Elektron                                                     e      = 1,6021773 × 10-19 C
Tetapan Faraday                                                    F     = 96.485,31 C mol-1
Massa untuk partikel dasar:
        Elektron                                                             me    = 9,109390 × 10-31 kg
        Proton                                                                mp    = 1,672623 × 10-27 kg
        Neutron                                                             mn    = 1,674929 × 10-27 kg
Nisbah massa proton dengan massa elektron   mp/me = 1836,15270
Permitivitas vakum                                                 ε0     = 8,8541878 × 10-12 C2 J-1 m-1
Tetapan Planck                                                       h      = 6,626076 × 10-34 J s
Laju cahaya dalam vakum                                  c      = 2,99792458 × 108 m s-1 (tepat)
Tetapan gas universal                                            R     = 8,31451 J mol-1 K-1
                                                                                            = 0,0820578 L atm mol-1 K-1
Nilai-nilai diambil dari Quantities, Units and Symbol in Physical Chemistry, International Union of Pure and Applied Chemistry, Blackwell Scientific Publications, 1988


Faktor Konversi
 

Atmosfer standar                1 atm     = 1,01325 × 105 Pa
                                                            = 1,01325 × 105 kg m-1 s-2 (tepat)
Satuan massa atom            1 smu = 1,660540 × 10-27 kg
                                                1 smu = 1,492419 × 10-10 J = 931,4943 MeV (energi yang setara dari E = mc2)
Kalori                                     1 kal = 4,184 J (tepat)
Elektron volt                         1 eV    = 1,6021772 × 10-10 J
                                                            = 96,48531 kJ mol-1
Kaki                                       1 kaki = 12 inci = 0,3048 m (tepat)
Galon (AS)                            1 galon = 4 quart = 3,78541 L (tepat)
Liter-atmosfer                      1 L atm = 101,325 J (tepat)
Metrik ton                             1 metrik ton = 1000 kg (tepat)
Pound                                    1 lb = 16 ons = 0,45359237 kg (tepat)

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