Alithium atom has three protons, three neutrons, and three electrons. what is the overall charge on this atom?

Compare and contrast physical changes with chemical changes.

Which theory was contradicted by experiments with the photoelectric effect? light spreads out after it passes through a small opening. as soon as light strikes metal, electrons will be ejected. visible light, regardless of color, will cause the ejection of electrons when striking metal. the kinetic energy of ejected electrons depends on the frequency of light that strikes the metal.

Ajet plane is speeding down the runway during takeoff. air resistance is not negligible. identify the forces on the jet.