Atraveling electromagnetic wave in a vacuum has an electric field amplitude of 98.9 v/m . calculate the intensity of this wave. then, determine the amount of energy that flows through area of 0.0259 m2 over an interval of 11.7 s , assuming that the area is perpendicular to the direction of wave propagation.

Explanation:

As we know that the magnitude of electric field intensity is given as

now we know that intensity of the wave is given as the product of energy density and speed of the wave

so intensity is the energy flow per unit area per unit of time

so the energy that flows through the area of 0.0259 m^2 in 11.7 s is given as

beta is electron from nucleus

something from nucleus has changed, but charge must be same for cons of charge