At some instant and location, the electric field associated with an electromagnetic wave in vacuum has the strength 98.5 v/m. find the magnetic field strength, the energy density, and the power flow per unit area, all at the same instant and location.

Explanation:

As we know that the electric field strength in vacuum due to electromagnetic waves is given as

now we know the relation between electric field and magnetic field as

For energy density we know that

Power flow per unit area is given as

they are non-matter

explanation:

they are non-matter. basically, any type of energy or any abstract concept is an example of something that does not matter. other examples include dreams, magnetism, radio, and hate

heat the gas and measure the pressure