11. These are the standard SI prefixes for indicating powers of 10. Many are familiar; yotta, zetta, exa, hecto, deka, atto, zepto, and yocto are rarely used.
12. We will be working in the SI system, in which the basic units are kilograms, meters, and seconds. Quantities not in the table are derived quantities, expressed in terms of the base units.
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15. Example 1-2: The 8000-m peaks. The fourteen tallest peaks in the world are referred to as “eight-thousanders,” meaning their summits are over 8000 m above sea level. What is the elevation, in feet, of an elevation of 8000 m?
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17. Dimensions Dimensions of a quantity are the base units that make it up; they are generally written using square brackets. Example: Speed = distance/time Dimensions of speed: [ L / T ] In dimensions, mass, length, time, temperature, and electric current is symbolize with M, L, T, K and A respectively.
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Notas do Editor
Figure 1-5. Caption: Some lengths: (a) viruses (about 10 -7 m long) attacking a cell; (b) Mt. Everest’s height is on the order of 10 4 m (8850 m, to be precise).
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