Asoccer ball is kicked with an initial horizontal velocity of 17 m/s and an initial vertical velocity of 20 m/s. 1) what is the initial speed of the ball?

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 .