An electromagnetic wave is traveling in a vacuum. The magnitudes of the electric and magnetic fields of the wave are , and the electric and magnetic energies carried by the wave are . proportional (but not equal) to each other, unequal equal, proportional (but not equal) to each other proportional (but not equal) to each other, equal equal, equal

Explanation:

The relation between the magnitudes of the electric and magnetic fields of the wave is given by :

c is speed of light

E and B are electric and magnetic field

So, the magnitudes of the electric and magnetic fields of the wave are proportional to each other.

Also, the wave carries same magnitudes of the electric and magnetic fields of the wave.

this could be newton#'s law of cooling. the cooling curve is exponential