Question

. The wavelength of green light is about 0.00000051 meter. What is this estimated

wavelength as a single digit times a power
of 10?

Answer 1

5×10^-7

Explanation:

The most significant digit (5) of the number 0.00000051 is in the 7th place to the right of the decimal point. The power of 10 associated with that decimal place is -7.

0.00000051 m ≈ 5×10^-7 m