Radio stations use electromagnetic waves for broadcasting. The chart shows different frequencies of waves used by radio stations. Which radio station has the wave with the longest wavelength?

Answer: radio station W
Explanation:
The wavelength of a radio wave is given by:
[tex]\lambda=\frac{c}{f}[/tex]
where
c is the speed of light
f is the frequency of the wave
From the equation, we see that the wavelength is inversely proportional to the frequency: the higher the frequency, the shorter the wavelength, the lower the frequency, the longer the wavelength.
Therefore, the waves with longest wavelength are the waves with lower frequency: therefore, the waves emitted by radio station W.