Physics, 08.07.2019 00:30 ghostlyfrost67p8u0ey
If a 70-kg swimmer pushes off a pool wall with a force of 250 n, what is her acceleration?
Answers: 1
Physics, 21.06.2019 20:30
Determine the amount of work done when a crane lifts a 100-n block form 2m above the ground to 6m above the ground
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Physics, 21.06.2019 20:30
Aforce of 240.0 n causes an object to accelerate at 3.2 m/s2. what is the mass of the object?
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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 14:30
70 give a real life example showing how sensory neurons work with the motor neurons
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If a 70-kg swimmer pushes off a pool wall with a force of 250 n, what is her acceleration?...
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