An incandescent 100W light bulb costs $0.40 and lasts 1200 hours. A compact fluorescent light bulb which outputs the same amount of light uses only 23W, costs $3.65 and lasts 10,000 hours. Compare the cost of buying and using incandescent lights for 10,000 hours versus a compact fluorescent light bulb. Assume electricity costs $0.15 per kWh

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 -

The answer is a 0.64 volts