What is the origin, the symbol, and the factor of the deca- prefix?
by 
Egao No Genki
ANSWERS: 1
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Symbol: da Factor: 10^1 Origin and further information: The prefix was a part of the original metric system in 1795. It is not in very common usage in English-speaking countries, although the decapascal is occasionally used by audiologists. The decanewton is also encountered occasionally, probably because it is an SI approximation of the kilogram-force. It is more commonly used in other languages: in Austrian and Hungarian, deca is common (and always means decagram). It does my heart good every time I can answer a question that's four years old. http://en.wikipedia.org/wiki/Deca-
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