Unidades del SI (ALM042S )

Written by: Newton C. Braga
Category: Banco de Informaciones - Almanaque

 

En el Sistema Internacional de Unidades, las unidades básicas son:

Magnitud Básica Nombre Símbolo

Magnitud Básica%Nombre%SímboloLongitudd%Metro%mMasa%Kilogramo%kgCorriente eléctrica%Ampere%ATiempo%segundo%sTemperatura termodinâmica%kelvin%KCuantidad de sustancia%mol%molIntensidade luminosa%candela%cd

Unidades derivadas del SI

Unidades derivada%Nombre%SímboloArea%metro cuadrado%m2Volumen%metro cúbico%m3Velocidad%metro por segundo%m/sAceleración%metro por segundo al quadrado%m/s2Número de onda%metro recíproco%m-1Densidade de masa%Kilograma por metro cúbico%kg/m3Volumen específico%Metro cúbico por kilograma %m3/kgDensidad de corriente%Ampere por metro cuadrado%A/m2Intensidad de campo magnético%Ampere por metro%A/mConcentración de sustancia%Mol por metro cúbico%mol/m3Luminancia%candela por metro cuadrado%cd/m2Fracción de masa%Kilograma por kilograma (*)%1

         (*) Debe ser representada por el número 1

Otras unidades fuera del SI

(aceptadas para uso con el SI) Nombre de valor en unidades del SI Símbolo

Nombra%Valor e unidades del SI%SímboloMilla náutica%1852 m%-Nodo%1 milla náutica por hora = 1852/3600 m/s%-Bar%1 bar = 1 Mpa = 100 kPa = 1000 Pa%barare%1 a = 100 m2%aHectárea%1 ha = 10,000 m2%haAngstron%1 A = 0.1 nm = 10-10m%ABarn%1 b = 100 fm2 = 10-28 m2%bCurie%1 ci = 3,7 x 1010 Bq%CiRöentgen%1 R = 2.58 x 10-4 C/kg%RRadiano%1 rad = 1 cGy = 10-2 Gy%radRem%1 rem = 1 cSv = 10-2 Sv%remsquare mil%1 sq mil = 645.2 ?m2%sq milminuto%1 min = 60 s%minhora%1 hour = 60 min = 3600 s%hgrado (ángulo)%1o = Φ/180 rad%ominuto (ángulo)%1’ = 1/60o%‘segundo (ángulo)%1” = 1/60”%“litro%1 l = dm3 %lneper%1 Np = 1%Npbel%1 B = ½ ln 10 Np%Bunidad astronómica%1 ua =1 .495 98 x 1011%ua 

 

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