Physics, 12.10.2020 22:01 jackferguson34
The following three forces act simultaneously on the same object A = 300 N, 30o N of E; B = 600
N, 270o
; C = 100 N, due east. Find the resultant force using the polygon method.
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 16:30
A14 kg rock starting from rest free falls through a distance of 5.0 m with no air resistance. find the momentum change of the rock caused by its fall and the resulting change in the magnitude of earths velocity. earth mass is 6.0 * 10^24 kg. show your work assuming the rock earth system is closed.
Answers: 2
Physics, 22.06.2019 18:50
What accounts for an increase in the temperature of a gas that is kept at constant volume? a. energy has been removed as heat from the gas. b. energy has been added as heat to the gas. c. energy has been removed as work done by the gas. d. energy has been added as work done by the gas.
Answers: 2
The following three forces act simultaneously on the same object A = 300 N, 30o N of E; B = 600
N,...
Mathematics, 26.04.2021 15:30
Advanced Placement (AP), 26.04.2021 15:30
Mathematics, 26.04.2021 15:30
Mathematics, 26.04.2021 15:30
Mathematics, 26.04.2021 15:30
Mathematics, 26.04.2021 15:30
Mathematics, 26.04.2021 15:30