1 what . sis The heart pumps blood into the aorta, which has an inner radius of 10 cm - The aorte to ed 32 major arteries is blood no the conte fravels aorta at a speed of pecms at approximately whed average speed does it 28 /, , travel in the arterios? Assume that blood can be treated as an ideal puid and that the arteries each have an ioner radius of 0-21 cm (smks)

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 -

Some type of thing that was invisible