the wavelengths of visible light are between 3.8 x 10^-7 and 7.6 x 10^-7 m. are these wavelegths longer or shorter than those of ultraviolets.
ultraviolets= 1 x 10^-7

Question

the wavelengths of visible light are between 3.8 x 10^-7 and 7.6 x 10^-7 m. are these wavelegths longer or shorter than those of ultraviolets. 
ultraviolets= 1 x 10^-7

anonymous · Answer

If they're the same factor - $10^{-7}$ - then the decimal value is compared.

anonymous · Answer

so it would be alot shorter?

anonymous · Answer

When you're dealing with scientific notation, if they have the same power beside 10, the higher, the longer.

stamp · Answer

vw = visible wavelength
$$3.8^{1}10^{-7} \le vw \le 7.6^{1}10^{-7}$$$$ultraviolet = 1^{1}10^{-7} $$$$ 1^{1}10^{-7} < 3.8^{1}10^{-7} $$

The visible wavelength is greater than the ultraviolet wavelength.

anonymous · Answer

oh ok :) thanks

stamp · Answer

When considering:$$ 1^{1}10^{-7} < 3.8^{1}10^{-7} $$ Divide each side by: $$ 10^{-7} $$
And you are left with:$$1^{1} < 3.8^{1} $$
This shows ultraviolet is shorter than  visible wavelength by a factor of 3.8.

anonymous · Answer

hmm. great explanation

stamp · Answer

Glad to hear it