Aplane monochromatic radio wave (λ = 0.4 m) travels in vacuum along the positive x-axis, with a time-averaged intensity i = 25 w/m2. suppose at time t = 0, the electric field at the origin is measured to be directed along the positive y-axis with a magnitude equal to its maximum value. what is bz, the magnetic field at the origin, at time t = 2 ns? bz =

Explanation:

= Permittivity of free space =

c = Speed of light =

= Wavelength = 0.4 m

T = Time period

f = Frequency

= Electric field

Intensity of electric field is given by

Magnetic field is given by

Magnetic field in the z direction is given by (x=0)

The magnetic field at the origin is

cant without the picture! ?

c) power lifting, will be your answer.

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