Mate

EQUIVALENCIAS DE CONVERSION

LONGITUD
1 metro (m) = 39.37 in = 3.281 f t = 6.214 x 10– 4 mi = 10 10 Å = 1015 fermis
1 in = 0.0254 m
1 ft = 0.3048 m
1 mi = 1609 m
1 milla náutica = 1852 m = 1.1508 mi = 6076.10 ft
1 angstrom ( Å ) = 10 – 10 m
1 mil = 10 – 3 in
1 rod = 16.5 f t
1 fathom = 6 f t
1 año luz = 9.461 x 1015 m
1 mil = 2.54 x 10 – 5 m

ÁREA
1 m2 = 10.76 ft2 = 1550 in 2
1hectárea ( ha ) = 10 000 m2 = 10 4 m 2 = 2.471 acres
1 f t 2 = 929 cm 2
1 in 2 = 6.452 cm 2 = 1.273 x 10 6 circular mil
1 acre = 43 560 ft 2 = 4 047 m 2
1 milipulgada circular = 5.067 x 10 – 10 m 2
1 f t 2 = 9.290 x 10 – 2 m 2
1 in 2 = 6.45 x 10 – 4 m 2
1 mi 2 = 2.59 x 106 m 2

VOLUMEN
1 m3 = 35.31 f t 3 = 6.102 x 10 4 in3
1 f t 3 = 0.02832 m 3
1 U.S. galón (gal) = 231 in 3 = 3.785 x 10–3 m 3
1 litro (L) = 10 –3 m 3 = 61.02 in 3

TIEMPO Y FRECUENCIA
1 año = 365.2422 días = 8 766 h = 525 900 min = 3.156 x 10 7 s
1 día = 86400 s
1 día sideral (periodo de una revolución de la Tierra) = 86 164 s
1 Herz (Hz) = 1 ciclo / s

VELOCIDAD
1 m/s = 3.281 ft/s = 3.6 km/h) = 2.237 mi/h = 1.944 knots
1 km/h = 0.2778 m/s-= 0.9113 ft / s = 0.6214 mi /h
1 mi/h (mph) = 0.44704 =1.467 ft/s = 1.609 km/h = 0.8689 knot
1 ft/s (fps) = 0.3048 m/s
1 in/s = 2.54 x 10 –2 m/s

ACELERACION

1 pie / s 2 = 0.3048 m / s 2
g = 9.807 m/s 2 ≈ 9.81 m / s 2

MASA
1 kg = 2.205 lbm = 0.06852 slug
1 g = 10 –3 kg
1 lbm = 0.4536 kg = 0.03108 slug
1 slug = 32.17 lbm = 14.59 kg
1 unidad de masa atómica (u) = 1.6606 x 10 –27 kg

DENSIDAD
1 g/cm 3 = 1000 kg/m 3 = 62.43 lbm / f t 3 =1.940 slug / ft 3
1 Ibm / f t 3 = 0.03108 slug / f t 3 = 16.02 kg / m 3 = 0.01602 g / crn 3
1 slug / f t 2 = 515.4 kg / m 3

FUERZA
1 newton ( N ) = 10 5 dinas = 0.1020 kg = 0.2248 lb
1 lb ( fuerza ) = 4.448 N = 0.4536 kg wt = 32.17 poundals
1 dina = 10 – 5 N

PRESION
1 N / m 2 = 9.869 x 10 – 5 atm = 1.450 X 10 – 4 lb / in 2 = 0.02089 lb / f t 2 = 7.501 x 10 – 4 cm Hg
= 4.015 X 10 – 3in de H 2 O = 10 – 5 bar
1 lb / in 2 = 144 lb / f t 2 = 6895 N / m 2 = 5.171 cm Hg
= 27.68 in de H2O
1 atm = 406.8 pulgadas de agua=76 cm Hg = 1.013 X 10 5 N / m 2 o Pa = 10 330 kg w t / m 2
= 2116 lb / ft 2 = 14.70 lb / in 2 = 760 torr
1 bar = 10 5 Pa
1 cm Hg = 1333 Pa
1 dina / cm 2 =10 – 1 Pa
1 lb / ft 2 = 47.88 Pa
1 lb / pulg 2 (psi) = 6 895 Pa
1 torr = 133.3 Pa

TRABAJO, ENERGIA YCALOR
1 Joule ( J ) = 0.2389 cal = 9.481 x 10 – 4 Btu = 0.7370 ft ∙ Ib = 107 erg = 6.242 x 1018 eV
1 caloría (cal) = 4.184 J
1 kcal = 4186 joules = 3.968 Btu = 3 087 ft ∙ Ib
1 eV = 1.602 X 10 – 19 joule
1 uma unificada = 931.48 MeV
1 kW ∙ h = 3.6 X 10 6 joules = 3413 Btu = 860.1 kcal = 1.341 hp ∙ h
1 Btu = 1 054 J
1 erg = 10 – 7 J
1 ft ∙ lb = 1.356 J

POTENCIA
1 caballo de fuerza ( hp) = 2 545 Btu / h = 550 ft ∙ lb / s = 745.7 watts = 0.1782 kcal / s
1 watt ( W ) = 2.389 x 10 – 4 kcal / s = 1.341 x 10 – 3 hp = 0.7376 ft lb/s
1 Btu/s = 1054 W
1 cal/s = 4.184 W
1 ft ∙ lb / s = 1.356 W

CARGA ELECTRICA
1 faraday = 96 487 coulombs
1 carga del electrón = 1.602 X 10-19 coulomb

FLUJO MAGNETICO
1 weber (Wb) = 108 maxweils = 108 líneas.

INTENSIDAD MAGNÉTICO
1 tesla ( T) = 1 newton/amp ∙ m = 1 weber/m2 = 10 000 gauss.

UNIDADES SI DERIVADAS |
Cantidad | Nombre | Símbolo | Unidades básicas | Otras unidades |
Angulo plano | Radian | Rad | m/m | |
Frecuencia | Hertz | Hz | 1/s, s – 1 | |
Fuerza | Newton | N | kg· m /s 2 | J / m |
Presión | Pascal | Pa | kg / m·s 2 | N / m 2 |
Energia, trabajo, cantidad de calor | Joule | J | kg·m2 / s 2 | N · m|
Potencia, flujo radiante | Watt | W | kg·m2 / s 3 | J / s |
Carga eléctrica | Coulomb | C | A ·s | |
Potencial electrico, (fem) | Volt | V | kg · m 2 / A · s 3 | W / A |
Capacitancia | Farad | F | A 2 · s 4 / kg ·m 2 | C / V |
Resistencia eléctrica | Ohm | Ω | kg ·m 2 / A 2 · s 3 | V / A |
Flujo magnetico | Weber | Wb | kg ·m 2 / A · s 2 | V · s |
Densidad de flujo magnetico |...