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Electromagnetic radiation, which includes light and x-rays, travels at 299,792,458 metres per second

(c - a universal constant).

Speed, frequency and wavelength are related by the equation speed = frequency times wavelength.

The only problem with this question is that a frequency of 2.01018 Hz is not in the x-ray range

of frequencies. X-rays are found in the frequency range of 30 petaHertz to 30 exaHertz.

To put it another way, electromagnetic radiation with a frequency of 2.01018 Hz

has a wavelength of 149,137 kilometers (92,669 miles), and that's no X-ray.

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