Question

what is the wavelength of a wave with a frequency of 4.00x10^8

Answer 1

@TuringTest

Answer 2

You can figure this out from the following relationship: the wavelength multiplied by the frequency is equal to the speed of light: to calculate substitute 4e8 in and divide by 3e8 (speed of light in metres per second) and you will have your answer in metres. There's more explanation here:
http://en.wikipedia.org/wiki/Planck%27s_constant

Answer 3

frequency = speed of light / wavelength
so
4*10^8 = 3* 10^8 / wavelength
so wavelength = ?

Answer 4

wavelength = 3*10^8 / 4*10^8 = ?

Answer 5

so your wavelength is 0.75 meters

Answer 6

@annej

Answer 7

I stand corrected - mayankdevani is correct and I got my algebra wrong - I should have said "divide the speed of light by the wavelength".

Answer 8

oh!!!!