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plug in the values you have in the formula..

but i get a giant number, and not sure what I do after that.. i need to figure out f=____hz

f=3.00x(10^8)/268nm

I feel like I am missing a step or something.

you did not concert the wavelength which is on nanometers into meters..

can you do that or should i help with that??

2.68 x 10^7 ?

10^-7?

no.....
nano = 1* 10^-9

does that help??

im a little confused.

@boomerang285 are you there?

where??

I really don't understand this.

to convert the wavelength from nanometers to meters you need to multiply by 10^-9

nano in its number state is 10^-9.....so nm=10^-9m

ok

no since nano is 10^-9, it is supposed to be 2.68 x 10^-9m

oh ok.... makes sense, so then the equation (f=c/wavelength) has those values in it?

yes....so what do you get after you plug in the numbers??

this is the tricky part for me.. I dont know how to correctly work it out

it looks like this though right? 3.00 x 10^8 / 2.68 x 10^-9

yes...

ok

80.4? probably way off...

input what you have on your calculator...

that is not what i got..

0.1119402985

http://www.wolframalpha.com/input/?i=%283+x+10%5E-8%29%2F%282.68+x+10%5E-9%29

does that help??

yes, i just didnt have the negative for the 10^-8

oh okay...you have to be careful next time.

do you get it now??

yes, so obviously I don't put in all the numbers.. so f = 11.15?

yes...

thank you!

yw!