To express the number \(0.0043\) in scientific notation, you can follow these steps:
- Move the decimal point to the right until you have a number between 1 and 10. In this case, moving the decimal point two places to the right gives you \(4.3\).
- Count the number of places you moved the decimal point. Here, it was moved 2 places to the right, which is represented as \(-2\).
- Write the number in the form \(a \times 10^n\).
So, \(0.0043\) in scientific notation is:
\[ 4.3 \times 10^{-3} \]