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Physics, 26.11.2021 01:00 freddyfriendo2364
A man can row a boat in still water at a speed of 1 m/s. The man sets out to row the boat in a river from A to B. The water in the river flows at 0.5 m/s in direction B to A. Find the velocity of the boat throughout the water.
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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 springāmass 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 (ādark absorption linesā)? explain briefly.
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Physics, 22.06.2019 14:20
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A man can row a boat in still water at a speed of 1 m/s. The man sets out to row the boat in a river...
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