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Phy 435/815 Problem Sets (Fall 2019)

Prob. Set 1: Assigned Tuesday, Sept. 17, Due Thursday, Sept. 26 (this problem set is now complete):
Do Prob. 1.3b (skip part a).  Add a part c) to this question which states: Suppose that the Sun had the density distribution that is given in part b).  Find the radius which contains 90% of the Sun's mass.  (The central density of the Sun is 150.5 g/cm^3.)   Compare your result to the actual value given by the SSM (standard solar model).  Is the density distribution of the Sun steeper or flatter than this model?  Explain.

Do Prob. 2.5.  Note that height, h, refers to the height above the radius of the Sun in km.

Do Prob. 2.6.  Note that the negative hydrogen ion cannot be ignored when it comes to opacity but it can be ignored when one considers number densities as is the case for this problem.

Do Prob. 2.7.  You'll need to solve several equations in several unknown so I recommend using computer algebra to help.

3.05  a) Plot graphs of the following quantities from the standard solar model (SSM) as a function of mass  (M/Msun) rather than radius:
radius (R/Rsun); density (rho); pressure (P); temperature (T), luminosity (L/Lsun); abundance of hydrogen (X); abundance of He4 (Y)
b) Compare your results to the plots handed out in class where these quantities (except the first) were plotted against R/Rsun.
Prob. Set 2: Assigned Thursday, Sept. 26, Due Thursday, Oct. 3 (this problem set is now complete):

Do Prob. 3.2.  Note that R is not radius, but rather is defined in the question.

Do Prob. 3.5.  For part c), adopt a scale height of 0.063 Rsun.

Do Probs.  3.8   and 3.10
Picture
Prob. Set 3: Assigned Thursday, Oct. 3, Due Tuesday, Oct. 15 (this problem set is now complete):

Do Probs. 4.1, 5.1, 5.3, and 5.4 (below)
Picture
Prob. Set 4: Assigned Tuesday, Oct. 15, Due Thursday, Oct. 31: (this problem set now complete)

Do Probs. 8.1, 8.2, 8.3, 9.1,  9.3 (for part c, assume a perturbation velocity of 1 km/s), and 11.1

Prob. Set 5: Assigned Thursday, Oct. 31, Due Thursday, Nov. 7: (this problem set is now complete)

Do Probs. 9.4 (see below), 11.3, 12.1
Picture
Prob. Set 6: Assigned Thursday, Nov. 7, Due Monday, Nov. 18: (this problem set is complete)

Do Probs. 15.1, 16.1, and 18.1 (see handout)

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  • Home
  • Publications
    • Book Reviews
  • Research
  • Teaching
    • Physics 315 Fall 2018 >
      • Summary_evaluation_F18
      • Assignments_F18
      • Observing Project F18
      • Lecture Notes F18
      • Exam Info F18
    • Phy 372 Winter 2019 >
      • Phy 372 Assignments
      • Phy 372 Notes
      • Phy 372 Solutions to Numerical Problems
    • Physics 813 >
      • Presentations
      • Final Exam Schedule
      • Assignments >
        • Assignment 1
        • Assignment 2
        • Assignment 3
        • Assignment 4
    • Physics 435/815 Fall 2019 >
      • Course Outline F19
      • Phy 435/815 Problem Sets F19 >
        • Graduate Student Presentations F19
  • Personal
  • Contact