**a) **The intensity of the electric field:

$\overline{){\mathbf{I}}{\mathbf{=}}\frac{\mathbf{1}}{\mathbf{2}}{{\mathbf{\epsilon}}}_{{\mathbf{0}}}{\mathbf{c}}{{{\mathbf{E}}}_{\mathbf{m}\mathbf{a}\mathbf{x}}}^{{\mathbf{2}}}}$

Therefore, the Maximum value of electric field is:

The energy flow to the earth from sunlight is about 1.40kW/m^{2}.

a) Find the maximum value of the electric field for a sinusoidal wave of this intensity.

b) Find the maximum value of the magnetic field for a sinusoidal wave of this intensity.

c) The distance from the earth to the sun is about 1.50x10^{11}m. Find the total power radiated by the sun.

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