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What is the difference in units when the power is to a power of 9 like "Giga" in comparison to the power of negative 9 like in "Nano"? Does this suggest they way you move the decimal for that unit for the final answers?
You have the right idea! Positive powers indicate that you move the decimal point to the right, while negative powers indicate that you move the decimal point to the left. So keeping that in mind, giga- would be in factors of 1,000,000,000 while nano- would be .000000001.
Positive powers will indicate that the number is larger/higher while negative powers usually indicate that the number is smaller/lower. For example something that is 10^4 would equal 10,000 while something that is 10^-4 would equal 0.0001.
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