At some instant and location, the electric field associated with an electromagnetic wave in vacuum has the strength 90.5 V/m. Find the magnetic field strength B, the total energy density u, and the power flow per unit area, all at the same instant and location.
B = ____ T
u = ____ J/m^3
power flow per unit area = ____ W/m^2
A traveling electromagnetic wave in a vacuum has an electric field amplitude of 50.9 V/m. Calculate the intensity S of this wave. Then, determine the amount of energy U that flows through an area of 0.0233 m^2 over an interval of 16.1 s, assuming that the area is perpendicular to the direction of wave propagation.
S in W/m^2
U in J