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Physics, 22.06.2019 07:30
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 springâmass 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 (âdark absorption linesâ)? explain briefly.
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Physics, 22.06.2019 08:50
You are given a vector a = 125i and an unknown vector b that is perpendicular to a. the cross-product of these two vectors is a Ă b = 98k. what is the y-component of vector b?
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Physics, 22.06.2019 12:00
Apatient has a history of poor nutrition. he has skin rashes, bleeding gums, and a cut that hasnât healed in a long time. what vitamin deficiency most likely caused this symptom?
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Physics, 22.06.2019 12:30
Which levels of government establish and implement educational requirements for minors
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The mass of the earth is 5.98 1024 kg, the mass of the moon is 7.36 1022 kg, and the distance betwee...
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