How many uranium atoms are there in 9.2 g
of pure uranium? The mass of one uranium
atom is...
Answers: 1
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 12:30
Write a full page that sumerizes thermodynamics it’s from the website visionlearnig
Answers: 1
Physics, 22.06.2019 19:00
If state law mandates that elevators cannot accelerate more than 2.40 m/s2 or travel faster than 14.8 m/s , what is the minimum time in which an elevator can travel the 373 m from the ground floor to the observatory floor? ?
Answers: 1
Mathematics, 09.03.2021 20:00
Mathematics, 09.03.2021 20:00
Mathematics, 09.03.2021 20:00
Mathematics, 09.03.2021 20:00
Mathematics, 09.03.2021 20:00
Chemistry, 09.03.2021 20:00
Mathematics, 09.03.2021 20:00
Biology, 09.03.2021 20:00