1) What is the spring stiffness of the entire wire, considered as a single macroscopic (large scale), very stiff spring?
2) How many side-by-side atomic chains (long springs) are there in this wire? This is the same as the number of atoms on the bottom surface of the nickel wire. Note that the cross-sectional area of one nickel atom is (2.23 10-10)2 m2.
3) How many interatomic bonds are there in one atomic chain running the length of the wire?