2D quiz 5 solution.pdf - Physics 2D Quiz 5 solution Siyang...

Info icon This preview shows pages 1–2. Sign up to view the full content.

Physics 2D Quiz 5 solution Siyang Wang June 4, 2016 prob 1 In the NMR process, what frequency of EM radiation will be absorbed and emitted by free protons in a magnetic field of 1T? The magnetic moment for proton spin is: The energy difference between two spin(magenetic moment =plus or minus μ proton ) is: Δ E = Δ μ p B = 2 × 2 . 79 μ N B = hf EM f EM = 4 . 25 × 10 7 Hz prob 2 Using the atomic mass of 33 Fe 26 of 55.934939u, computing its binding energy per nucleon. Binding energy for Iron is: B.E. = [26 M H + (56 - 26) m n - 55 . 934939 u ] c 2 Where M H =1.007825u and m n =1.0086649u So binding energy per nucleon for 33 Fe 26 is B.E./ 56 = 8 . 79MeV prob 3 238 U , the most copious isotope of Uranium, decays by α emission followed by β - twice, then there are 5 consecutive α emissions. What isptope is produced. For α decay, nucleon number decrease by 4 and atomic number(number of proton) by 2. In β - becay there will be one neutron turn into proton so the number of nucleon unchanged but the proton number will increase by 1. So totally 6 α decays decrease nucleon number by 24 and proton number by 12. 2
Image of page 1

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern