25. Rachel spiked the volleyball towards an AMS opponent at a speed of 15 meters per second. The ball slammed against the floor in 2 seconds. How far did the ball travel?

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?

Wave functions describe orbitals in a hydrogen atom. each function is characterized by 3 quantum numbers: n, l, and ml. if the value of n = 2: the quantum number l can have values from to . the total number of orbitals possible at the n = 2 energy level is .

Why do metals "give up" their valence electrons?