Explain the historical development of the atomic model from Democritus to Bohr. What is the difference between an emission spectrum and an absorption spectrum for a specic element? what does it mean to say something is radioactive? How do nuclear reactors work? what are the postulates for the Special Theory of Relativity? 'actice The color orange has a wavelength of 630 nm. what is the energy.r of an orange photon in EV? The energy levels for a Bohr atom are shown below. Use this diagram to solve problems }' and 8. 0 ed v2.5 ev 4.0 EU 3.0 e'u' '12.5 eV '3'. what amrJunt of energy.r is needed for an electron to jump from n = 1 to n = 4? 8. what is the wavelength of the photon needed to make this happen? Is it emission or absorption? 9. If the atomic mass of Sodium-18 is 18.0259? u, what is the binding energy? Complete each of the following radioactive decay equations. an a QM + re II? 335'!) ) $51" + The half-life of Uranium-23? is 5.83 x 105' seconds. what is the decay constant? The half-life of Uranium-23? is 5.83 x 105 seconds. If you have a sample with 5.89 x 10\" atoms in it, how much of that sample is left after 1.75 x 105' seconds? How can scientists know the age of an artifact they pull from a historical dig? why do doctors place a sheet of lead over your body when you have x-rays done? Would the same be held true for gamma rays? A friend is adamantly against building any more nuclear power plants in your local area. You, however, understand its benefits. How might you address your friend to convince him ofthe need for the new power facility? Research and create a presentation that explains either radioactive dating or phormoceuticoi hoifiife, both applications of the term \"halflife\" but in very different ways. You may choose one of the following ways to present your information: o A brochure or informational pamphlet with explanations and images. I A recorded speech that includes drawings or diagrams referenced in the audio. 0 A slideshow presentation with explanations and images. For any of these formats, a bibliography of at ieast three sources is required