Verified answer

For ANY wave, wavelength * frequency = velocity.

So for EM radiation, velocity=c, so

a) f = c / wavelength

b) Look up the frequency/wavelength on a table of electromagnetic spectrum (in your book or wikipedia)

c) E = hf = hc / wavelength

If you don't know h (planck's constant) or c (the speed of light), look those up too. This isn't hard. Just look up the stuff and plug it in.

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