What form of energy does the sun produce? a) electrical b) light c) mechanical d)sound

Examine the equation. 23490th→23088ra+42he what kind of barrier would you need to block the radioactive particles from this reaction? a. a piece of paper b. a sheet of aluminum foil c. a two-inch block of lead d. a solid concrete block

Most of the volume of an atom is occupied by the

Matter that emits no light at any wavelength is called