Physics, 04.08.2019 04:20 grantjaylynn
Atrain travels 94 kilometers in 5 hours, and then 84 kilometers in 3 hours. what is its average speed?
Answers: 1
Physics, 21.06.2019 15:50
Aneutron and a proton combine to form a nucleus. why does the mass of the nucleus differ from the sum of the masses of the individual nucleons?
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 08:50
The electronic structure or chlorine is 2.8.7 what is the electronic structure of fluorine?
Answers: 2
Physics, 22.06.2019 09:00
This is really important 1.which of the following prefixes represents the largest value? (2 points)gigahectorkilomilli2.which of the following types of graphs is best for plotting the mean, median, and mode of data? (2 points)bar graphbox-and-whiskercircle graphstem-and-leaf
Answers: 1
Atrain travels 94 kilometers in 5 hours, and then 84 kilometers in 3 hours. what is its average spee...
Mathematics, 20.05.2021 22:00
English, 20.05.2021 22:00
Mathematics, 20.05.2021 22:00
Social Studies, 20.05.2021 22:00
Mathematics, 20.05.2021 22:00
Mathematics, 20.05.2021 22:00
Mathematics, 20.05.2021 22:00
Mathematics, 20.05.2021 22:00
Mathematics, 20.05.2021 22:00
Mathematics, 20.05.2021 22:00
Mathematics, 20.05.2021 22:00