Physics, 31.08.2019 03:40 QueenNerdy889
Using a 1-kw heater for one hour consumes more energy than using a 100-w bulb for twenty-four hours. select the best answer from the choices provided
t
f
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 springâmass 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 (âdark absorption linesâ)? explain briefly.
Answers: 3
Physics, 22.06.2019 21:10
Which of the following is a measure of the amount of light a star directly emits? a. luminosity b. intensity c. wavelength d. brightness
Answers: 2
Physics, 23.06.2019 02:00
How many excess electrons must be present on each sphere if the magnitude of the force of repulsion between them is 4.57Ă10â21 newtons?
Answers: 2
Physics, 23.06.2019 04:31
In which item is energy stored in the form of gravitational potential energy? a. a slice of bread b. a compressed spring c. an apple on a tree d. a stretched bow string
Answers: 1
Using a 1-kw heater for one hour consumes more energy than using a 100-w bulb for twenty-four hours....
Mathematics, 06.11.2020 17:10
Biology, 06.11.2020 17:10
English, 06.11.2020 17:10
Advanced Placement (AP), 06.11.2020 17:10