At the end of a ride at a winter-theme amusement park, a sleigh with mass 250 kg (including two passengers) slides without friction along a horizontal, snow-covered surface. the sleigh hits one end of a light horizontal spring that obeys hooke’s law and has its other end attached to a wall. the sleigh latches onto the end of the spring and subsequently moves back and forth in shm on the end of the spring until a braking mechanism is engaged, which brings the sleigh to rest. the frequency of the shm is 0.225 hz, and the amplitude is 0.950 m. (a) what was the speed of the sleigh just before it hit the end of the spring? (b) what is the maximum magnitude of the sleigh’s acceleration during its shm?

Which graph best represents the relationship between the electric current and the rate at which a magnet is turning inside an electric generator?

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.

Place me with this question is my last question