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Part of Biology (Single Science) ... multiplication or division of the right factor of ten (10, 100, 1000) is used. ... 1 cm = 10 mm so the conversion is × 10.
Dimensional analysis (also called factor label method or unit analysis) is used to convert from one set of units to another. This method is used for both simple (feet to inches) and complex (g/cm3 g/cm 3 to kg kg /gallon) conversions and uses relationships or conversion factors between different sets of units.
A conversion factor is a statement of the equal relationship between two units. The first step in dimensional analysis is therefore identifying the conversion factor (s) you will need to make your conversion. In the egg problem, the statement that "1 dozen eggs = 12 eggs" is a conversion factor. 2.
The following section provides a systematic approach you can use to convert between SI units. You will gain confidence with these kinds of conversions only through practice, and you will need to memorise the unit prefixes and what conversion factor they represent. When converting to or from a base unit you need to determine the conversion factor.
54,700 m × 1,000 m 1 m = 54,700,000 mm= 5.47×107 mm 54, 700 m × 1, 000 m 1 m = 54, 700, 000 mm = 5.47 × 10 7 mm. We have expressed the final answer in scientific notation. As a shortcut, both steps in the conversion can be combined into a single, multistep expression:
Step One: Remember that 1 mm = 1000 µm. So to get from µm to mm you need to divide by 1000. Step Two: Calculate the thickness of the leaf in mm. 2000 ÷ 1000 = 2, so the actual thickness of the leaf is 2 mm and the drawing thickness is 50 mm. Step Three: Put these values into the equation for calculating magnification.
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Scientific Unit Conversion Francois Cardarelli,2012-12-06 Published in a pocket book format for ease of use, this is a truly unique and practical guide giving accurate metric equivalents and conversion factors for no fewer than 10,000 scientific units.
