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The scientific notation of 400 nm is 4.0 x 10^-7 meters. This is because scientific notation represents a number as a coefficient multiplied by 10 raised to a certain power. In this case, 400 nm is equivalent to 4.0 x 10^-7 meters, as there are 10^9 nanometers in a meter.

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It is: 4.0*10^2 nm

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Wiki User

9y ago
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Q: What is the scientific notation of 400 nm?
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