Roughly, it takes light less than 0.000000003 of a second to travel a one-meter distance. Express this number in a form of a x 10^n where 1<a<10 and is a one-digit number.

Answer 1

To express the number in scientific notation, we need to count the number of decimal places we need to shift to the right to make it a value between 1 and 10.

Starting with the given value of 0.000000003, we move the decimal point 9 places to the right to get 3.0.

Therefore, the number can be expressed as 3.0 × 10^9.