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    how would you convert 1.5 x 10 ^ - 15 cm into metres? dont just give the answer explain what rule you applied!
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    (Original post by Hunny123)
    how would you convert 1.5 x 10 ^ - 15 cm into metres? dont just give the answer explain what rule you applied!
    well 100 cm = 1m, so
    1 cm = 10^(-2)m, so
    1.5*10^(-15) cm = 1.5*10^(-15) * 10^(-2) = 1.5*10^(-17) m
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    Mm I find the exponential form for expressing units help. Always convert things in to metres, and remember the prefixes - 1cm = 10^-2m, 1um = 10^-6m etc. If you're proficient with a calculator this is a very easy method.
 
 
 
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