The nucleus of some isotopes will spontaneously undergo nuclear decay. these isotopes are said to be radioactive. what causes the nucleus of an isotope to be radioactive? question 17 options: a. the net charge of the atom b. the attraction of protons to electrons c. an unstable ratio of protons and neutrons exposure to toxic chemicals d. too many electrons in its orbitals

The solar panels used by mark function because of the photoelectric effect. light shines on the cells causing electrons to be ejected from the metal, which produces an electric current. at night on mars, no light will fall on the solar cells and no electric current will be generated. according to your notes, what type of light is typically needed to cause the photoelectric effect? a)visible b)ultraviolet c)infrared

Gordon is going for a run through the park, but it is cold outside. the low outside temperature could affect his personal safety.

Place me with this question is my last question