Conversiones de unidades fisicas

Conversiones.
Longitud
1 pulg =2.54 cm (exacto)
1 m =39.37 pulg =3.281 pies
1 pie = 0.3048 m
12 pulg = 1 pie
3 pies = 1 yd
1 yd = 0.9144 m
1 km = 0.621 mi
1 mi = 1.609 km
1 mi = 5280 pies
1 µm= 10-6 m = 103 nm
1 año luz = 9.461x1015m

Area.

1 m2= 104 cm2 = 10.76 pies2
1pie2=0.0929 m2 = 144 pulg2
1 pulg2= 6.452 cm2

Volumen1 m3= 106 cm3 =6.102 x 104 pulg3
1 pie3= 1728 pulg3 =2.83 x 10-2m3
1 L = 1000 cm3 = 1.0576 qt = 0.0353 pie3
1 pie3= 7.481 gal = 28.32 L =2.832 x10-2m3
1 gal = 3.786 L = 231 pulg3


Masa

1000 Kg = 1 t (tonelada métrica)
1 slug = 14.59 Kg
1 u= 1.66 x 10-27Kg = 931.5 MeV/c2Fuerza

1 N = 0.2248 lb
1 lb = 4.448 N

Velocidad

1 mi/h = 1.47 pies/s = 0.447 m/s = 1.61 km/h
1 m/s = 100 cm /s = 3.281 pies/s
1 mi/min =60 mi/h = 88 pies/s

Aceleración

1 m/s2 = 3.28 pies/s2 = 100 cm/s2
1 pie/s2 = 0.3048 m/s2 = 30.48 cm/s2

Presión

1 bar = 105 N/m2 =14.50 lb/pulg2
1 atm = 760 mm Hg = 76.0 cm Hg
1 atm = 14.7 lb/pulg2 = 1.013 x 105 N/m2
1 Pa = 1 N/m2 =1.45 x 10-4 lb/pulg2

Tiempo

1 año luz =365 dias =3.16 x 107 s
1 dia = 24 h = 1.44 x 103 min = 8.64 x 104 s

Energía

1 J = 0.738 pie.lb
1 cal = 4.186 J
1 Btu = 252 cal =1.054 x103J
1 eV = 1.602 x 10-19 J
1 kWh = 3.60 x 106 J

Potencia

1 hp =550 pies.lb/s = 0.746 kW
1 W = 1 J/s = 0.738 pie.lb/s
1 Btu/h = 0.293 W