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Physics, 05.10.2019 06:30, lilycastillo15
Usually the force of gravity on electrons is neglected. to see why, we can compare the force of the earth’s gravity on an electron with the force exerted on the electron by an electric field of magnitude of 3 v/m (a relatively small field). what is the force exerted on the electron by an electric field of magnitude of 3 v/m
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Physics, 22.06.2019 07:30, anonymous1813
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 16:00, jayelijah0508
What is friction? how does it affect the motion of an object?
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Physics, 22.06.2019 17:30, giraffegurl
Distinguish between linear momentum and angular momentum
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Usually the force of gravity on electrons is neglected. to see why, we can compare the force of the...
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