Answer:
[tex]f=4.83 * 10^{-7}Hz[/tex]
Explanation:
Hello
electromagnetic waves are the waves that do not need a material medium to propagate. They include, among others, visible light and radio, television and telephone waves. They all propagate in a vacuum at a constant, very high speed (300,000 km / s) ,now ,the frequency has an inverse relationship with the concept of wavelength , the higher the frequency, the shorter the wavelength and viceversa. The frequency f is equal to the speed of the wave, divided by the wavelength l
[tex]f=\frac{v}{l}\\\\\\\1 km= 1000 m\\300000 km/s = 300000000 m/s\\\\f=\frac{300000000 m/s}{6.2*10^{14}m}\\\\f=4.83 * 10^{-7}s^{-1}\\[/tex]
by definition
[tex]s^{-1} = Hz[/tex]
[tex]f=4.83 * 10^{-7}Hz[/tex]
have a great day
