![]() Given the information above, could the earth be made completely of granite? Convert your granite's density to g/cm 3. Thus you determine that the granite has a density of 171 lb/ft 3. ![]() You weigh a 1.00 cubic ft piece of granite on your home scale and find that it weighs 171 lbs. As an astute observer walking around on continental crust (granite), you might decide to test the hypothesis that the Earth is made entirely of granite.See if you can do some unit conversions using information given in the questions below to determine whether the whole Earth could be made of these two rock types only. From travel times of earthquake waves, we also know that the average density of the Earth is about 5.5 g/cm 3. Kilogram-force (kgf) or kilopond (kp) to N: 9.Is a speed limit of about 30 mph (mi/hr) a reasonable speed limit? If you got 0.80 mph or 30,000 mph, would you recognize that it is not reasonable?ĭensity Conversions (multiple step problems) Problem 2:Geologists' observations suggest that the two most common rocks exposed at the surface of the Earth are granite (continental crust) and basalt (oceanic crust). Kilogram-force metre per second (kgf.m/s) to W: 9.80665 Kilogram-force metre (kgf.m) to J: 9.80665īritish Thermal Unit (Btu) to J: 1.05506E3ġ watt (W) is equal to one joule per second (J/s or m 2kgs -3)įoot pound-force per second (ft.lbf/s) to W: 1.35582 Standard atmosphere (atm) to Pa: 1.01325E5 (760 torr)ġ joule (J) is equal to one newton metre (N.m)Įlectronvolt (eV) to J: 1.6021892E-19 (1 e*1V) Pound-force per square inch (lbf/in 2) to Pa: 6.89476E3 (144 lbf/ft 2) Pound-force per square foot (lbf/ft 2) to Pa: 4.78803E1 Knots (international) (kn) to m/s: 5.14444E-1ġ pascal (Pa) is equal to one newton per square metre (Nm -2 or kgm -1s -2) Grain (gr in UK, no US symbol) to kg: 6.479891E-5 (1/7000 lb)ĭrachm (dram in US) to kg: 3.88793E-3 (3 scruple)Īpothecaries ounce (oz apoth in UK, oz ap in US) to kg: 3.11035E-2 (8 drachm and 1 oz tr) Short ton (sh tn / USton) to kg: 9.07185E2 (20 sh cwt) Short hundredweight (sh cwt) to kg: 4.53592E1 (100 lb) ![]() Hundredweight (cwt) to kg: 5.08023E1 (4 qr and 112 lb) Liquid quart (US liq qt) to m 3: 9.46353E-4 (2 US liq pt) ![]() Liquid ounce (US liq oz) to m 3: 2.95735E-5 (8 US fl dr) Nautical mile (international) (n mile) to m: 1.852E3 You may also like to read an explanation of theįurlong to m: 2.01168E2 (10 chains, 220 yd)Ĭable - not precisely defined, 608ft (1/10 UK nautical mile) or 720 ft (120 fathoms) 0.05m in inches is 0.05/2.54E-2 = 1.97inĪ less involved way to do it would be to click on the title for the unit you are interested in to use the.To convert between (say) centimetres (cm) and inches (in) both conversion factors have to be used: Taking the example of inch (in) to metre (m), the conversion factor is 2.54E-2 (or 0.0254):Ĭonverting the other way round is easy too - just divide by the conversion factor: ![]() For instance "foot (ft) to m: 3.048E-1 (12 in)" says that as well as one foot being 0.3048m it is also exactly 12in. This is the conversion for the same measuring system. This means cubic metres or "metres to the power of 3".Īfter some of the conversion factors is another conversion in brackets. Some units have superscripts in them, for instance m 3. The "E" can be read as "times ten to the power of".Įach unit is written out in full before its abbreviation is used. For instance the number 1300 is represented as 1.3E3. To represent a lot of the numbers I have used scientific notation. ![]()
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