Two vectors A= 5i+2j-k and B = -3i -j-k are added. the magnitude of the sum is

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?

Sodium chloride, nacl, is formed when a sodium atom transfers its electron to a chlorine atom. the difference in charge between the two atoms creates a(n) attraction that bonds them together.

Astudent pushes a 60-n block across the floor for a distance of 10 m. how much work was done to move the block