<span>0.0001 km / year or 10^-5 km/year just take 50 km and divide it by 5 million</span>
Radio waves in a vacuum travel at the speed of light because they are a type of electromagnetic radiation like a light has been measured as traveling at 3×10^8 m/s in a vacuum.
Charged particles that are accelerating, like time-varying electric currents, are what produce radio waves. Radio and television signals are transmitted using radio waves, and microwaves used in radar and microwave ovens are also radio waves. Radio waves are emitted by a lot of celestial bodies, including pulsars. High RF exposure levels have the potential to heat biological tissue and raise body temperature. The body's inability to handle or remove the extra heat that could be generated by high RF exposure in humans could result in tissue damage.
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Answer:
The distance is
Explanation:
From the question we are told that
The order of maximum diffraction is m = 2
The wavelength is
The angle is 
Generally the condition for constructive interference for diffraction grating is mathematically represented as

where d is the distance between the lines on a diffraction grating
So

substituting values

