why do we use multiple and submultiple to measure the physical quantities?
Answers
Answer:
- Sometimes, the size of the SI unit is either too small or too big to measure a certain quantity. For example, a metre is too small a unit to measure the distance between two cities and too big a unit to measure the thickness of a wire. Hence, multiples and submultiples of units are required
Answer:
Prefixes for multiples and submultiples of units are used to more conveniently express very large and very small numbers (convenient compared to scientific notation or long strings of leading or trailing zeroes). The SI (modern metric system) uses a number of prefixes which are defined in the SI Brochure, as decided by the CPGM,
The SI takes the position that the misuse of decimal prefixes (powers of 1000) to represent binary (powers of 1024) in computer applications is unacceptable; they may only be used as proper powers of 1000. The IEC has released a set of binary prefixes 1024^n, the first of which is kibi- to replace kilo- for these application, but much of the computer world still misuses SI prefixes.
The Customary and Imperial systems don’t use prefixes, they simply coin new words, inch, foot, yard, fathom, rod, chain, furlong, mile, and varying ratios between successive units.
Large counting words, million, billion, trillion could be considered similar to prefixes; however, a space is left between number and counting word and between counting word and unit. True prefixes are attached to the unit.
Explanation: