The measurement 0.000 004 3 m, expressed correctly using scientific notation, is ________.

The measurement 0.000 004 3 m, expressed correctly using scientific notation, is 4.3 x 10^-6 m.

Here's the step-by-step process:

1. Identify the number to be converted. In this case, it's 0.000 004 3 m.

2. Move the decimal point to the right of the first non-zero digit. Here, that's 4. So, we get 4.3.

3. Count the number of places you moved the decimal. In this case, it's 6 places to the right.

4. The number of places you moved the decimal becomes the exponent of 10 in the scientific notation. Since we moved the decimal to the right, the exponent is negative. So, it's -6.

5. Combine the number from step 2 with the 10 raised to the power from step 4. So, we get 4.3 x 10^-6 m.