The orientation in space of an atomic orbital is associated with

The magnetic quantum number

The magnetic quantum number is one of the four quantum numbers that characterize the quantum state of an electron bound from an atom.

This number determines the spatial orientation of the orbital and its name is due to the fact that this spatial orientation is normally defined in relation to an external magnetic field.

Therefore:

The orientation in space of an atomic orbital is associated with the magnetic quantum number .

Wavelength divides in half and speed stays the same.

The boat's velocity relative to the riverbank can be resolved into two components. the component going north is 2.7 m/s and the component going west is 1.2 m/s.we add these two vectors and then find the magnitude of the resultant to get the speed.the magnitude of the resultant vector from adding can be obtained by the pythagorean theorem.    to two significant figures, the boat's speed relative to the riverbank is 3.0 m/s.