Sonar stands for "sound navigation and ranging,” and it is used to map and explore the ocean floor.
what best describes a sonar wave?

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 .