To express the number in the form of a×10^n, we need to move the decimal point 9 places to the left since it takes less than 0.000000003 of a second for light to travel a one-meter distance.
0.000000003 can be written as 3 × 10^(-9).
Therefore, in the form of a×10^n, the number is 3 × 10^(-9).
Roughly, it takes light less than 0.000000003 of a second to travel a one-meter distance. Express this number in the form of a×10^n where 1<a<10 and is a one-digit number.
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1 answer