Physics, 29.01.2021 23:40, xxxanitaxxx
I NEED HELP ASAP IM ON TIMER
Given below is the motion diagram of a small ball rolling straight on a frictionless surface.
The time interval between successive positions (dots) is 1 s.
a. What is the displacement of the ball after 3 s?
b. Where does the ball reach after 5 s?
c. After rolling for 7 s, the direction of motion of the ball is changed. It starts rolling toward its starting point. Assume the coordinate system and the speed of the ball to remain unchanged. What is the displacement of the ball between 7 s and 9 s?
Answers: 3
Physics, 22.06.2019 07:30, anonymous1813
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 10:30, jdkrisdaimcc11
What are two different ways you could find the value of a? explain these methods.
Answers: 2
I NEED HELP ASAP IM ON TIMER
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