Atrain travels 120 km in 2 hours and 30 minutes what’s its average speed

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?

Which lists the organs in the correct order as food passes from the mouth to anus?

Which lists the pairs of plates in order from least to greatest in terms of the work done to move the electron?