Question

Measured in meters the wavelength of red light is about 8 times 10^-7, and the wave Leung violet light is 4 times 10^-7. The wavelengths red light is how many times longer than the wavelength of violet light?

8 times 10^-7m
4 times 10^-7m

A. 4 times as long
B. 10^2 times as long
C. 2 times as long
D. 10^7 times as long

Answer 1

2

Explanation:

got it right on iready! :)

Answer 2

C. 2 times as long

Step-by-step explanation

8 times 10^-7 written in standard form is 0.0000008

4 times 10^-7 written in standard form is 0.0000004

divide both of them:

=2