At noon, ship a is 45 miles due west of ship
b. ship a is sailing south at 5 mph while ship
b is sailing north at 15 mph.
at what speed is the distance between the
ships changing at 3: 00 pm?

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 .