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تطبيقات جافا

 

الأطوال Length
10 سنتميتر ( سم ) = 1 ديسمتر( دسم )
 		 10 centimeters = 1 decimeter (dm)
10 مليمتر (ملم)   = 1 سنيمتر ( سم )

10 millimeters (mm) = 1 centimeters (cm)
1000 متر =  1 كيلومتر ( كم )  1000 meters = 1 kilometer (km)
10 ديسيميتر  = 1 ميتر ( م) 

10 decimeters = 1 meter (m)
1 ماكروميتر  =  10 10-6  متر 1 µm = 10-6 m
1 ملمتر (ملم ) =  10 ^-3  متر 1 mm = 10-3 m
1 انجستروم  = 10 ^ -10  متر  1 Angstrom = 10-10 m
ا كم = 0.6214  ميل 1 km = .6214 miles
1 ميل  = 1.609  كم

1 mile = 1.609 km
ا متر  =  39.37  انش 1 meter = 39.37 in
1 انش  = 0.0254  متر  in = .0254 meter
ا ملم  =  0.03937  انش  mm =0.03937 in
1 انش = 25.4  ملم  in = 25.4 mm
12 انش  =  1  قدم  

12 inches = 1 foot
26 انش =  يارده  

36 in = 1 yard (yd)
5280 قدم  =  1 ميل   5280 ft = 1 mile
1 سم  = 0.3937  انش  = 0.0328  قدم 1 cm = .3937 in = .0328 ft
1 سنة ضوئية = 9.46× 10 ^ 15  متر 1 light year = 9.461× 1015meters

 

المساحة  Area  
  ا سم 2  = 100 ملم2 1 cm2 = 100 mm2  
  1 m2 = 1,000,000   mm2
  1 m2 = 10,000 cm2
  1 km2 = 1,000,000 m2
144 square inches (in2) = 1 square foot
  43,560 ft2 = 1 arce
  144 square inches (in2) = 1 square foot
  640 arces = 1 square mile
  1 m2 = 10.76 ft2
  1 cm2 = 0.155 in2
  1 mile2 = 640 acres = 2.590 km2

 

الزوايا  Angles

  quadrant = 1.571 radiansunit
  1 degree = 60 minutes
  100 quadrants = 90 degrees
  1 radian = .637 quadrants

 

الحجم    Volume
 

 1 cm3 = milliliter(ml) = 1000 mm3
  1 liter (l) = 10 cm x 10 cm x 10 cm = 1000 cm3
  1 hectoliter (hl) = 100 liters
  1 cubic meter = 1000 liters
  1 gallon (gal) = .13368 ft3 = 3.785 liters
  barrel (oil) = 42 gallons (oil)
  1 U.S. gallon = .8327 Imperial gallon      
  1 meter3 = 61023 inch3
  1 meter3 = 264.2 gallons
  1 meter3 = 35.315 feet3
  1 meter3 = 1.308 yard3
  1 liter = .2642 U.S. gallon
  1 liter = .0353 feet3
  1 cm3 = .0610 inch3
  1 liter = 61.022 inch3
  1 gal = 4 quarts = 8 pints = 128 fl. oz = 231 in3

 

الزمن  Time
  1 hour = 60 minutes = 3600 seconds
  1 ms = 10-3 s
  µs = 10-6 s
  1 ns = 10-9 s
  1 day = 24 hours = 1440 min. = 8.64 x 104 seconds
  1 year = 365.24 days = 3.156 x 107 seconds
  1 fortnight = 2 weeks

 

السرعة Velocity
  1 kilometer/hour = .27778 meters/second  
  100 kph = 27.778 m/s
  1 mile/hour = .447 m/s
  60 miles/hour = 88 feet/second
  55 mph = 88.5 kph
  60 mph = 96.54 kph
  1 radian/sec = 9.549 rpm
  65 mph = 104.6 kph
  1 foot/minute = .0183 km/hour

 

 

الكتلة  Mass
  1 gram (g) = 1000 milligrams (mg)
  1 kilogram (kg) = 1000 grams
  1 (metric) Ton (t) = 1000 kg  
  1 gram is the mass of 1 cm3 of pure water at 40C 1 kg is the mass of 1 liter of pure water
  1 slug = 32.2 pounds mass (lbm) = 14.59 kg
  1 kg = 6.852 x 10-2 slug
  1 pound mass (lbm) weighs 1 pound force (lbf) on the Earth’s surface where the acceleration of gravity is 32.2 ft/s2 - and - 1 kg weighs 2.205 pounds force

 

القوة   Force
  1 Newton (N) = 1 kg•m/s2
  1 kg weighs 9.81 N on the Earth's surface where the acceleration of gravity is 9.81 m/s2
 
   1 lbf = 4.4482 N
  1 N = 0.2248 lbf
  1 kg weights 2.205 lbf
  1 N = 105 dyne
  1 ounce = 437.5 grains = .0625 lbf

 

 

الطاقة   Energy  

  1 calorie of heat will raise 1 gram of pure water 1°C (at 20°C
  1 joule (J) = 1kg•m2/s2
  1 calorie = 4.186 J
  1 kcal = 1000 cal = 4186 J
  1 Quad = 1015 Btu
  1 J = .23884 cal
  1 BTU of heat will raise 1 pound of pure water 1°F (at 39.1°F)
 
  Btu = 778.16 ft_lbf  
  1 Kilowatt•hour = 3,415.3 Btu
  1 Btu/min. = 17.57 Watts

 

القدرة  Power  

  1 watt (W) = 1kg•m2/s3 = 1 J/s
  1 Kilowatt (kW) = 1000 W
  1 H.P. = 550 ft•lbf/sec = 33,000 ft•lbf/min. = 745.7 W
1 kW = 1.341 H.P. = 737.6 ft•lbf/sec  
  1 Btu/min = 0.02357 H.P. = 17.58 W

 

الحرارة Temperature
  °Kelvin (K) = Centigrade © + 273.16°
  °F = (1.8 x °C) + 32°
  °C = (°F - 32°) x .555°

 

الضغط  Pressure  

  1 Pascal (Pa) = 1 N/m2
  1 bar = 105 N/m2
  1 atmosphere (atm) = 101,325 Pa = 760 torr
  1 lbf/in2 = 6.895 x 103 N/m2
  1 torr = 1 mm Hg = 133.32 N/m2
  1 in H2O = 1.868 mm Hg = 249.1 N/m2

 

اللزوجة  Viscosity  
  1 kg/(m_s) = 1 N_s/m2
  1 N•s/m2 = 10 Poise

 

الكميات المغناطيسية  Magnetic Quantities  

  1 Tesla (T) = 1 kg/(C•s)
  1 T = 104 Gauss (G) for B
  1 G = 1 g1/2/      (cm1/2•s)  
  1 G = 103 C/(m•s) for M
  1 G = (1/4_)•103C/(m•s) for H

 

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