What is the frequency of an electromagnetic wave if it has a wavelength of 1.1 km? the speed of light is 3 × 108 m/s. answer in units of hz.

Explanation:

The speed of light (electromagnetic wave) is given by the following formula:

  (1)

Where:

is the speed of light

the frequency

the wavelength

So, we have to find  from (1):

  (2)

Finally:

Knowing

r = ρ x length / area  

ρ = r x area / length  

ρ is in ohm-meters  

in basic units, it is m³kg/s³a²  

i think this is it.