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prefixes and powers
[SIZE=3][FONT=book antiqua]ok so i came across a calculation the other day im not sure i understand and was wondering if someone could help explain it[/FONT]
[FONT=book antiqua]ok so according to calculators and Google 10^(-3) = 0.001 [/FONT]
[FONT=book antiqua]so that means 10^(-3) kg = 1 gram
[/FONT]so how doesnt 10^(-3)kg = 10 grams
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[SIZE=3]Let's re-write [COLOR=#333333][FONT=book antiqua]10^(-3)
it is actually = 1 x [/FONT][/COLOR][COLOR=#333333][FONT=book antiqua]10^(-3)
Moving the decimal point to the left three place on the 1 (because the power is -3)
we get .001 - just like Google calculator
So, [/FONT][/COLOR][COLOR=#333333][FONT=book antiqua]10^(-3) kg = 1 x [/FONT][/COLOR][COLOR=#333333][FONT=book antiqua]10^(-3) kg or .001 kg or 1 g
[/FONT][/COLOR][COLOR=#333333][FONT=book antiqua]and
[/FONT][/COLOR][COLOR=#333333]10^(-3)kg = 1 x 10^(-3)kg = .001 kg = 1 grams
[/COLOR][/SIZE][COLOR=#333333][FONT=book antiqua][SIZE=3]kg = Kilograms or three places to the right of the decimal point.
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Because 10 to the [U]zero[/U] power is equal to one, not ten!
Timelord