What are possible units for impulse

Unpolarized light of intensity so passes through two sheets of polarizing material whose transmission axes make an angle of 60∘ with each other as shown in the figure. what is the intensity of the transmitted beam, st?

The voltage applied across a given parallel-plate capacitor is doubled. how is the energy stored in the capacitor affected?

In which of the following is positive work done by a person on a suitcase