# easy question to all the physicsy peoples

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#1
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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15 years ago
#2
(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
0
15 years ago
#3
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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