How many atoms are in 1.2 g carbou?

How air particles exert a pressure on the inside of the balloon

Which of the following would have less momentum than a 52 kg cheetah running at 10 m/s?

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.