A un pedazo de vidrio se le aumenta la temperatura de 25°C a 570°C para poderlo fundir, para esto se le suministraron 3000J. ¿De qué valor es la masa de dicho pedazo de vidrio?.
El valor especifico del vidrio es: 0.20 cal/g °C

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 -

Hi there, the property that gives muscles the ability to contract and relax is the presence of actin and myosin.

There's nothing  on the list you provided to which that law applies.