Visible blue light has a wavelength of about 0.475 centimeters.
what is this measurement written in scientific notation?
4.75 × 10^4 centimeters
4.75 × 10^-4 centimeters
4.75 × 10^5 centimeters
4.75 × 10^-5 centimeters

Alright, just in case there are more questions in the future. This is how scientific notation works. To put a number into scientific notation, just put the decimal right after the first number and use the powers of ten to express it right. So in this case .0000475 is your number. You put the decimal right after the 4, and then multiply by 10^-5 power to make it it's original value. Talk to me if you need more help. (Answer choice D)