an acoustic sensor while his son is playing the piano. His son played the piano keys from low do (261.6 Hz) to high do (523.2 Hz) consecutively for 10 seconds, and Dr. Lee collected the sound at a sampling frequency of 1000 Hz for 10 seconds. One frequency signal will be aliased. Calculate the frequency of the reconstructed signal, which is different from the original frequency. If you think there exist multiple aliased frequency signals, write all. Answer up to 1 decimal place (e. g., 0.1), and put the right unit. If necessary, round off.

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 -

Iwould sure like to answer your question but i honestly just don’t know