Compute the final velocities v1' and v2' after the collision of the two cylinders which slide on the smooth horizontal shaft. The velocities are positive if to the right, negative if to the left. The coefficient of restitution is e = 0.70.Before collision, cylinder 1 of mass m1 = 3.2 kg is sliding from left to right and cylinder 2 of mass m2 = 1.5 kg is sliding from right to left with velocities v1 = 7.8 m/s, v2 = 6.6 m/s, respectively.

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 -

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