Answer:
Wavelength of an EM wave is 4285.71 meters.
Explanation:
It is given that,
Frequency of the AM radio station, [tex]f=70\ kHz=7\times 10^4\ Hz[/tex]
We need to find the wavelength of an EM wave. The relation between frequency and the wavelength is given by :
[tex]\lambda=\dfrac{c}{f}[/tex]
c is the speed of light
[tex]\lambda=\dfrac{3\times 10^8\ m/s}{7\times 10^4\ Hz}[/tex]
[tex]\lambda=4285.71\ m[/tex]
So, the wavelength of an EM wave is 4285.71 meters. Hence, this is the required solution.
