قياس الأطوال Length

من طرف nouna الأحد 4 مارس 2012 - 22:41

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

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

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