Physics, 19.03.2020 08:02 cordovatierra16
An 83.5 kg fullback moving east with a speed of 5.0 m/s is tackled by a 84.5 kg opponent running west at 2.66 m/s, and the collision is perfectly inelastic. (a) Calculate the velocity of the players just after the tackle. m/s (b) Calculate the decrease in kinetic energy during the collision. J
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 springβmass 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 (βdark absorption linesβ)? explain briefly.
Answers: 3
Physics, 22.06.2019 10:00
What is the temperature in degrees celsius of a substance with a tempature of 49k
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Physics, 22.06.2019 18:30
Asmall grinding wheel has a moment of inertia of 4.0Γ10β5 kgβ
m2 . what net torque must be applied to the wheel for its angular acceleration to be 150 rad/s2 ?
Answers: 3
Physics, 22.06.2019 21:30
The three classes of rocks are sedimentary, metamorphic, and igneous. how are rocks classified into one of these three groups?
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An 83.5 kg fullback moving east with a speed of 5.0 m/s is tackled by a 84.5 kg opponent running wes...
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