Use the raising and lowering operator method to compute (n |& 2n) and (n|p2|n) for the general harmonic oscillator energy eigenstate | n). use your result to verify that you reproduce the expected result for (n| h |n). data 2 н - 2m 1 242 = hw ( â*â + п 3 0, 1, 2, 3, en = hw 2 mw р 2fh mw mw 2h mw [a, a' 1

If an atom contains 11 protons in its nucleus, predict the element with the atomic number and electronic configuration. will the number of electrons remain the same during the chemical reaction in such an atom? explain.

Some material consisting of a collection of microscopic objects is kept at a high temperature. a photon detector capable of detecting photon energies from infrared through ultraviolet observes photons emitted with energies of 0.3 ev, 0.5 ev, 0.8 ev, 2.0ev, 2.5ev, and 2.8ev. these are the only photon energies observed. (a) draw and label a possible energy-level diagram for one of the microscopic objects, which has four bound states. on the diagram, indicate the transitions corresponding to the emitted photons. explain briefly. (b) would a spring–mass model be a good model for these microscopic objects? why or why not? (c) the material is now cooled down to a very low temperature, and the photon detector stops detecting photon emissions. next, a beam of light with a continuous range of energies from infrared through ultraviolet shines on the material, and the photon detector observes the beam of light after it passes through the material. what photon energies in this beam of light are observed to be significantly reduced in intensity (“dark absorption lines”)? explain briefly.

If angle "a" is 25°, angle "b" is: a) equal to angle c b) less than angle c c) greater than angle c