To solve this problem it is necessary to apply the concepts given by Malus regarding the Intensity of light.
From the law of Malus intensity can be defined as

Where
Angle From vertical of the axis of the polarizing filter
Intensity of the unpolarized light
The expression for the intensity of the light after passing through the first filter is given by

Replacing we have that


Re-arrange the equation,

Re-arrange to find \theta





The value of the angle from vertical of the axis of the second polarizing filter is equal to 30.2°
Answer:
The correct choice is A. Yes, the more exercise the better.
Answer:
<u><em>note:</em></u>
<u><em>find the attached solution:</em></u>
Kinetic energy is calculated as such:
| therefore, 