Question

The length of the shortest wavelength of visible light is about 0.00000039. What is the length in scientific notation

Answer 1

Given:

The given number is 0.00000039.

Required:

We need to find the scientific notation.

Explanation:

Recall that a number is written in scientific notation when a number between 1 and 10 is multiplied by a power of 10.

Consider the given number.

0.00000039

Multiply and divide this number by 10000000.

$0.00000039=0.00000039\times\frac{10000000}{10000000}$$0.00000039=3.9\times\frac{1}{10000000}$$0.00000039=3.9\times\frac{1}{10^7}$$0.00000039=3.9\times10^{-7}$

Final answer:

$0.00000039=3.9\times10^{-7}$