Unpolarized light passes through three polarizing filters. The first filter has it transmission axis parallel to the z direction, the second has its transmission axis at an angle of 30 degrees from the z direction, the third has its transmission axis at an angle of 60 degrees from the z direction. If the light that emerges from the third filter has an intensity of 36.0 W/m2, what is the original intensity of the light? (Assume both angles are measured in the same direction from the +z axis). Use cos(30)=√3/2.

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