A 1.0 kg block is pressed against a spring that has been compressed 10 cm. If the spring has a spring compression equation of (F = 1000x) and when released causes the block to
slide along a frictionless horizontal surface and then up a frictionless incline:
*Note: Show all of your work/calculations
(a) Determine the velocity of the block the instant it leaves the spring.
(b) Determine the maximum height that will be reached by the block while on the incline.
(c) The total energy possessed by the block when it is located half way up the incline.

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.

Why is it important always to use horizontal bars in unit fractions when performing unit conversions?

Which of the following statement is false ? a.batteries should never be stored on metal trays or outside in the elements)b, battery acid cannot be neutralized)c.do not stack batteries on top of each other)d.never put a damaged battery in a dumpster. i