The length of a micrometer is approximately 0.00003937 inch. How would you express this in scientific notation?
The decimal point is moved 5 places to the right, so
This means 1/10,000’ or 0.00001.
Notice that, if you put a zero before the decimal in the original number, the raised power is the number of zeroes before the non-zero digits.
Scientific notation is always stated as a digit, then the decimal, then the rest of the digits, then the raised power.