Tabela De Grandeza Fisica

Grandeza Física

Símbolo

Fator de Conversão

Aceleração a 1 m/s2 = 3,281 ft/s2

1 ft/s2 = 0,3048 m/s2

1 g = 9,80665 m/s2 = 32,17405 ft/s2

Área A 1 m2 = 1550 in2 = 10,764 ft2 = 1,196 yd2 = 3,861x10-7 mile2

1 ft2 = 0.0929 m2 = 144 in2 = 0,1111 yd2 = 3,587x10-8 mile2

1 in2 = 6,452 cm2 = 6,452x10-4 m2 = 6,944x10-3 ft2 = 7,716x10-4 yd2 = 2,491x10-10 mile2

1 yd2 = 0.8361 m2 = 1296 in2 = 9 ft2 = 0,3228x10-6 mile2

1 mile2 = 2,590x106 m2 = 0,4015x1010 in2 = 2,788x107 ft2 = 3,098x106 yd2

1 acre = 1/640 mile2 = 0,404686 ha = 4046,86 m2

1 km2 = 102 ha2 = 106 m2 = 1010 cm2 = 1012 mm2

1 ha2 = 104 m2 = 108 cm2 = 1010 mm2

1 cm2 = 10-4 m2 = 0.155 in2

1 mm2 = 1.55x10-3in2

Peso Específico  1 lb/ft3 = 16.018 kg/m3

1 slug/ft3 = 515.379 kg/m3

1 kg/l = 62.43 lb/ft3

1 kg/m3 = 0.0624 lb/ft3

Energia

Q

ou

W British Thermal Unit (Btu), Calories, Joules, KiloJoules,

1 J (Joule) = 0,1020 kpm = 2,778x10-7 kWh = 2,389x10-4 kcal = 0,7376 ft lbf = 1 (kg m2)/s2 = 1 watt second = 1 Nm = 1 ft lb = 9,478x10-4 Btu

1 kpm = 9,80665 J = 2,724x10-6 kWh = 2,342x10-3 kcal = 7,233 ft lbf = 9,295x10-3 Btu

1 kWh = 3,6x106 J = 3,671x105 kpm = 859,9 kcal = 2,656x106 ft lbf = 3412x10-3 Btu

1 kJ = 1 kNm = 1kWs = 103 J = 0.947813 Btu = 0.23884 kcal

1 Btu (British thermal unit) = 1055.06 J = 107,6 kpm = 2,931x10-4 kWh = 0,252 kcal = 778.16 ft lbf = 1.055x1010 ergs = 252 cal = 0.293 watt hour

1 cal = 4.186 J

1 kcal = 4186,8 J = 426,9 kp m = 1,163x10-3 kWh = 3,088 ft lbf = 3,9683 Btu = 1000 cal

1 ft lbf (foot pound force) = 1,3558 J = 0,1383 kp m = 3,766x10-7 kWh = 3,238x10-4 kcal = 1,285x10-3 Btu

1 hp h (horse power hour) = 2,6846x106 J = 0,7457 kWh

1 erg = 1 (g cm2)/s2 = 10-7 J

1 eV = 1.602x10-19 J

1 Q = 1018 Btu = 1.055x1021 J

1 Quad = 1015 Btu

1 kg m = 7.233 ft lb = 0.00929 Btu = 9.806 Joule

Energia por unidade de massa 1 kJ/kg = 0.4299 Btu/ lbm = 0.23884 kcal/kg

Força

F

1 N (Newton) = 0,1020 kp = 0,2248 lbf = 7,232 pdl = 1 (kg m)/s2

1 lbf (Pound force) = 4.44822 N = 0,4536 kp = 32,17 pdl = 4.448x105 dyn

1 dyn = 1 (g cm)/s2

1 kg has a weight of 1 kp

1 kp (Kilopond) = 9.80665 N = 2,205 lbf = 70,93 pdl

1 pdl (Poundal) = 0,13826 N = 0,01409 kp = 0,03108 lbf

Taxa de fluxo de calor

q 1 Btu/sec = 1055.1 W

1 kW (kJ/s) = 102,0 kpm/s = 859,9 kcal/h = 3413 Btu/h = 1,360 hk = 1,341 hp = 738 ft lb/s = 1000 J/s = 3,6x106 J/h

1 kpm/s = 9,8067x10-3 kW = 8,432 kcal/h = 32,47 Btu/h = 0,01333 hk = 0,01316 hp = 7,237 ft lb/s

1 kcal/h = 1,163x10-3 kW = 0,1186 kpm/s = 3,969 Btu/h = 1,582x10-3 hk = 1,560x10-3 hp = 0,8583 ft lb/s

1 Btu/h = 2,931x10-4 kW = 0,0299 kpm/s = 0,252 kcal/h = 3,986x10-4 hk = 3,939x10-4 hp = 0,2163 ft lb/s

1 kcal/h = 1,16x10-3 kW

1 hk (metric horse power) = 0,735499 kW = 75,00 kpm/s = 632,5 kcal/h = 2510 Btu/h = 0,9863 hp = 542,8 ft lb/s

1 hp = 0,74570 kW = 76,04 kpm/s = 641,2 kcal/h = 2545 Btu/h = 1,014 hk = 550,3 ft lb/s

1 ft lb/s = 1,35501 kW = 0,1382 kpm/s = 1,165 kcal/h = 4,625 Btu/h = 1,843x10-3 hk = 1,817x10-3 hp

Fluxo de calor q’’ 1 Btu/ft2 = 2.713 kcal/m2 = 2.043x104 J/m2K

1 Btu/ ft2 h = 3.1525 W/m2

1 Btu/ft2 oF = 4.88 kcal/m2K = 2.043x104 J/m2K

1 kcal/m2 = 0.369 Btu/ft2

1 kcal/m2K = 0.205 Btu/ft2oF

Geração de calor por unidade de volume

q’’’G 1 Btu/ft3 = 8.9 kcal/m3 = 3.73x104 J/m3

1 Btu/ft3 h = 10.343 W/m3

1 kcal/m3 = 0.112 Btu/ft3

Geração de calor por unidade de massa

1 Btu/lb = 0.556 kcal/kg = 2326 J/kg

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