The particles that make up the atomic nucleus of all atoms are both protons and neutrons.
A cycle is counted from the first day of 1 period to the first day of the next period. The average menstrual cycle is 28 days<span> long. Cycles can range anywhere from </span>21<span> to </span>35 days<span> in adults and from </span>21<span> to </span>45 days<span> in young teens.</span>
To measure the kinetic engery from the inside and outside of something to be able to tell how hot or coll something is.. without touching it also
