Can someone me find the distance and the displacement ?

The distance is how far he walks. It doesn't matter where he starts or ends. That's 1 mile, every day. Displacement is the length of a straight line from the start point to the end point. The route along the way doesn't matter. That's zero every day ... Ike starts and ends at his front porch.

Distance: 1 mile
Displacement: 0. Why? Because he returns to his porch, the he winds up in the exact same place he started, making displacement =0.

An  atom  (ours, not carroll's) consists of a positively charged  nucleus, surrounded by one or more negatively charged particles called  electrons. the positive charges equal the negative charges, so the atom has no overall charge; it is electrically neutral. most of an atom's mass is in its nucleus; the mass of an electron is only 1/1836 the mass of the lightest nucleus, that of hydrogen. although the nucleus is heavy, it is quite small compared with the overall size of an atom. the radius of a typical atom is around 0.1 to 0.25 nanometres (nm), whereas the radius of a nucleus is about 10-6  nm.  *  if an atom were enlarged to the size of the earth, its nucleus would be only 200 feet in diameter and could easily rest inside a small football stadium.read more on -