What type of energy transformations happen during running

An initially unpolarized light if intensity 500 w/m^2 passes through four polarizers. the transmission axis between adjacent polarizers is 45∘. what percentage of the initial intensity is transmitted by the system?

Which of the following are considered noble gases? a. bromine b. neon c. argon d. chlorine

Abar magnet cut in half will form a total ofpoles.a)fourb)eightc)two