If an element has a charge of 4+, how many more protons does it have than electrons?
protons

Which units can be used to measure length or distance? check all that apply. gram meter kilometer liter inch

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

Anybody wanna ? (picture included? )