calculate the frequency of the following wave lengths of electromagnetic radiation?

Question

632.8 nm v1=?

503 nm v2=?

0.052 nm v3=?

Answer 1

Please remember for any electromagnetic wave:
c = ν•λ
where c is the speed of light 2.998x10^8 m/s, ν the frequency in 1/s or Hz, and λ the wavelength in m.
You need to practice to learn anything.

Answer 2

you dont really need that equation because the equation you were using is to calculate energy in joules. The equation you should use is c = ( wavelength x frequency) (3.0 x 10^ 8 m/s) = ( 337.1) ( frequency) ---->> divide most side by 337.1 8.9 x 10^5 Hz or ( 1/s) = frequency Im supposing the wavelength unit is in meters cuz you didnt specify Plus you can check you answer by plug it back into the equation and see if it gives you any of values you started with