Physics, 30.07.2019 02:30 Gideon3291
Which of the following is a result of a change in pressure? a. oxidation b. exfoliation c. frost wedging d. chemical feathering
Answers: 1
Physics, 21.06.2019 23:30
Ais useful when you need a simple machine to you separate two things. a. lever b. screw c. pulley d. wedge
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Physics, 22.06.2019 05:00
The image below shows numerous volcanic mountains in the pacific northwest. what is the most likely cause of the volcanic and earthquake activity in this region?
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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.
Answers: 3
Physics, 22.06.2019 09:00
In the first law of thermodynamics, triangle e=q-w, what does q stand for
Answers: 1
Which of the following is a result of a change in pressure? a. oxidation b. exfoliation c. frost w...
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