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?

radio station W

Explanation:

The wavelength of a radio wave is given by:

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.

r=rho l/a where a is the area, l is the length and rho is resistivity so the greater the area the lesser the resistance thats why the earth pin is thicker bcos current follow the shortest path, so less resistive .