Which statement describes a physical property related to the particles that make up a material? HELP ASAP!!!

When you turn on a battery-operated device, an electrical circuit is

Determine the maximum r-value of the polar equation r =3+3 cos 0

Suppose you have three polarizing filters, with the second at an angle of 42∘ to the first and the third at an angle of 90∘ to the first. by what perfect will the original intensity of unpolarized light be reduced to after passing through all three filters?