Real life phenomena related to each branch of
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Physics, 21.06.2019 16:20
Describe how the fermi level changes with donor level, temperature and contact with p and n type semiconductors
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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 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.
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Physics, 22.06.2019 11:30
Acaterpillar tries to climb straight up a wall a meter high, but for every 2 cm up it climbs, it slides down 1 cm. eventually, it reaches the top. when it reaches the top, it does not pull itself over so it will slide down 1 cm. what is the total displacement traveled?
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Physics, 22.06.2019 11:30
Write down two additional questions about earth's magnetic field that will make your presentation more informative.
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Social Studies, 05.02.2021 22:40
Geography, 05.02.2021 22:40
Biology, 05.02.2021 22:40
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History, 05.02.2021 22:40
History, 05.02.2021 22:40
Mathematics, 05.02.2021 22:40
Mathematics, 05.02.2021 22:40
Mathematics, 05.02.2021 22:40
Social Studies, 05.02.2021 22:40
Mathematics, 05.02.2021 22:40
Mathematics, 05.02.2021 22:40