A small mass of 0.2kg is weld round in a horizontal circle at the end of the stream of length 0.5m at a constant angular speed of 4radius per sec calculate the angular speed of the object

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 .