<em><u>The number 0.000000016 is expressed in scientific notation is:</u></em>

<em><u>Solution:</u></em>
Given that,
Charlie learns that a computer processor can perform one command in approximately 0.000000016 nanoseconds
We have to express in scientific notation
<em><u>Step 1:</u></em>
Given number is:
0.000000016
Move the decimal point in 0.000000016 until there is only one non-zero digit to the left of the decimal point
Here,
Move the decimal 8 places to the right to get 1.6
We have moved the decimal to left, therefore, exponent is negative

Thus the given number is expressed in scientific notation