For problem 21., are kw the force and how do i solve it?
...
Answers: 3
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 12:10
Energy flows from the producer level to the level. is called
Answers: 1
Physics, 22.06.2019 19:20
Two kilograms of air within a piston–cylinder assembly executes a carnot power cycle with maximum and minimum temperatures of 800 k and 300 k, respectively. the heat transfer to the air during the isothermal expansion is 60 kj. at the end of the isothermal expansion the volume is 0.4 m3. assume the ideal gas model for the air. determine the thermal efficiency, the volume at the beginning of the isothermal expansion, in m3, and the work during the adiabatic expansion, in kj.
Answers: 1
Mathematics, 27.05.2021 23:30
Mathematics, 27.05.2021 23:30
Mathematics, 27.05.2021 23:30
English, 27.05.2021 23:30
Mathematics, 27.05.2021 23:30
French, 27.05.2021 23:30
Mathematics, 27.05.2021 23:30
Business, 27.05.2021 23:30
Mathematics, 27.05.2021 23:30
Mathematics, 27.05.2021 23:30
Mathematics, 27.05.2021 23:30
Mathematics, 27.05.2021 23:30
Biology, 27.05.2021 23:30