9. the largest flowers in the world are the rafflesia arnoldii, found in malaysia. a single flower is almost a
meter across and has a mass up to 11.0 kg. suppose you cut off a single flower and drag it along the flat
ground. if the coefficient of kinetic friction between the flower and the ground is 0.39, what is the magnitude
of the frictional force that must be overcome?

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 -