Why does a car slide when it rolls on an icy patch on a road

Why are people not able to skip a dive to the deepest part of the ocean

What are the first two quantum numbers for the electrons located in subshell 4d? what are the first three quantum numbers for the electrons located in subshell 2s? how many electrons can be held in a sublevel l = 3? how many electrons can be held in the energy level n = 4? how many electrons in an atom can share the quantum numbers n = 4 and l = 3?

Is 343 in the sequence -5, -2, 1, 4, 7