6. Incandescent objects emit light because of the_ of the charged particles inside their atoms . ncident radiation is equal to _ The slope of a graph of the kinetic energy of ejected electrons versus the frequency of the Planck's constant the work function (7) 7. & 8. Einstein explained the by postulating that light exists in discrete bundles of the wavelength of the radiation energy called ( 8 ) the threshold frequency 9. Even though they have zero mass, photons have energy and 13. Calculate the energies of energy levels 1-5 in the hydrogen atom. Fill in the table provided for your answers. Use the space provided for work. For #10, write true or rewrite the italicized part to make the statement true, 10. The Heisenberg uncertainty principle says that it is impossible to measure precisely both the position and momentum of a particle at the same time. 10. 11. What allows the measurement of Planck's constant, h? the spectrum of an incandescent object the photoelectric effect the Compton effect a photon's momentum