Please explain to me how to do B.
I have done A. and got 10^-7

A. Medical X-rays, with a wavelength of about 10^-10m, can penetrate completely through your skin. Ultraviolet rays, which cause sun burn by penetrating only the top level of skin, have a wavelength about 1000 times the wavelength of an X-ray. find the wavelength of ultraviolet rays. Show your work.

B. The wavelengths of visible light are between 3.8 * 10^-7m and 7.6 * 10^-7m.
Are these wavelengths longer or shorter than those of ultraviolet rays? Explain

Question

Please explain to me how to do B. 
I have done A. and got 10^-7

A. Medical X-rays, with a wavelength of about 10^-10m, can penetrate completely through your skin. Ultraviolet rays, which cause sun burn by penetrating only the top level of skin, have a wavelength about 1000 times the wavelength of an X-ray. find the wavelength of ultraviolet rays. Show your work.

B. The wavelengths of visible light are between 3.8 * 10^-7m and 7.6 * 10^-7m.
Are these wavelengths longer or shorter than those of ultraviolet rays? Explain

goformit100 · Answer

is it a Mathematics Question ?

anonymous · Answer

Yes did you read it -_-

anonymous · Answer

I am doing my school right now I don't have time to read all of that sorry I will read it later

goformit100 · Answer

Please Read CoC (compulsory to read for all "Open Study" users) : http://openstudy.com/code-of-conduct @connexus.com Sir, Please read it first before using Open Study

anonymous · Answer

I read it and I am not braking any rules :P

goformit100 · Answer

it is a Physics Question Post it in Physics Section Please, otherwise other user will have difficulty.

anonymous · Answer

This is a math problem please re read it

goformit100 · Answer

ok ... i thought it because it includes X-rays

anonymous · Answer

A lot of math problems involve science its ok

kropot72 · Answer

If you put the wavelengths in fractional form the answer should be obvious:
$$uv\ wavelength=\frac{1}{10^{7}}$$
$$visible\  light\ wavelength\ range=\frac{3.8}{10^{7}} \to\ \frac{7.6}{10^{7}}$$

goformit100 · Answer

I am really Sorry @connexus.com Sir. If possible please excuse me.

anonymous · Answer

@kropot72 I know that but I do not know what I am suppose to do for B

kropot72 · Answer

Is 1/10^7 m longer or shorter than 3.8/10^7 m ?

anonymous · Answer

Shorter

kropot72 · Answer

Correct! And is 1/10^7 m longer or shorter than 7.6/10^7 m ?

anonymous · Answer

Shorter

kropot72 · Answer

Correct again. So you have found that the wavelength of ultra-violet rays is shorter than the wavelength of all colors in the spectrum of visible light.

anonymous · Answer

Ok so what would I put for B

kropot72 · Answer

The wavelengths of visible light are longer than the wavelength of ultra-violet light.

anonymous · Answer

Thanks :)

kropot72 · Answer

You're welcome :)