What is the magnitude and phase of (1+w3)exp(-1x6)? ii) if a small source has a source level of 165 db re 1μρα, what is the spl at 50m from the source in an open space. give your answer in db re lupa,? i) what is the transmisson loss of a wave in a chamel of height 11: 0m over a horizontal range of 500m?

If the ama of the inclined plane below is 2, calculate the ima and efficiency. ima = efficiency =

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.

What are some properties of transverse waves?