22 sample documents related to PHYSICS 3021

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  Solutions03

  Georgia Tech PHYSICS 3021
  

   
   
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  Solutions01

  Georgia Tech PHYSICS 3021
  

  HOMEWORK 1 Astronomy & Astrophysics Chapter 8 11a. How much more energy is emitted by a star at 20,000 K than one at 5,000 K? (Assume the sizes are similar.) E = 4 R2 T4 E1 / E2 = (T1 / T2)4 = (20,000 / 5,000)4 = (4)4 = 256 X 11b. What is the predominate
   
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  Solutions02

  Georgia Tech PHYSICS 3021
  

  HOMEWORK 2 Astronomy & Astrophysics Chapter 8 7. By applying the Boltzmann equation to the neutral hydrogen atom (neglect ionization), write the equation for the population of the nth energy level relative to that of the ground state at temperature T. Now
   
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  Solutions04

  Georgia Tech PHYSICS 3021
  

  HOMEWORK 4 Astronomy & Astrophysics Chapter 8 The two solar absorption lines given in the table below are produced when an electron makes an upward transition from the ground state orbital of the neutral Na I atom. () 3302.98 5895.94 W () 0.067 0.560 f 0.
   
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  Line_Broadening.pdf

  Georgia Tech PHYSICS 3021
  

  Spectral Line Shapes Spectral Line Shapes The shape of an spectral line contains a wealth of information about the environment in which it was formed. The figure shows a graph of the radiant flux, F, as a function of wavelength for a typical absorpt
   
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  Fusion_higher.pdf

  Georgia Tech PHYSICS 3021
  

  Higher-Mass Nuclear Fusion Binding Energy Binding Energy is the energy released due to an accompanying loss in mass when nucleons are combined into atomic nuclei (i.e., fusion). Helium Burning The heart of the reaction by which 3 4He 12C + is the
   
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  Milky_Way.pdf

  Georgia Tech PHYSICS 3021
  

  The Milky Way The Milky Way The Milky Way is a continuous band of diffuse light. The band is thicker and brighter in one part of the sky and 180o away it is thinner and fainter. The band is tilted about 60o with respect to the Celestial Equator. Tel
   
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  Red_Giants.pdf

  Georgia Tech PHYSICS 3021
  

  Red Giants Binding Energy Binding Energy is the energy released due to an accompanying loss in mass when nucleons are combined into atomic nuclei (i.e., fusion). Helium Burning The main line of nucleosynthesis during He burning is found to consist
   
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  The_Sun.pdf

  Georgia Tech PHYSICS 3021
  

  The Sun Basic Solar Data 100 times larger than the Earth One million times as massive as Earth Surface Temperature ~10,500 F (5,800 K) Rotates once per month Is half a degree in size on the sky Basic Solar Data Solar Atmosphere Photosphere (Light
   
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  Brown_Dwarfs.pdf

  Georgia Tech PHYSICS 3021
  

  Brown Dwarfs Very-Low-Mass Stars What is the smallest amount of material that can form a star? Calculations suggest it is 7 times the mass of Jupiter. Brown dwarfs might be 7 - 100 times the mass of Jupiter. Stars powered by fusion are 100 - 50000 t
   
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  Post-AGB_Stars.pdf

  Georgia Tech PHYSICS 3021
  

  Evolution Beyond the Red Giants Pressure vs Gravity The evolution of a star is shaped by the balance of pressure and gravity. When these two forces are in balance, a star is stable. As a star consumes its supply of hydrogen and evolves away from the
   
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  Pulsars.pdf

  Georgia Tech PHYSICS 3021
  

  Pulsars and Neutron Stars History The neutron was discovered in 1932. In 1933 a prediction (largely ignored) was that supernovae could form neutron stars. First one was discovered 1967 by Jocelyn Bell; period was 1.3373 seconds. Three more pulsars w
   
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  Homework05.pdf

  Georgia Tech PHYSICS 3021
  

  HOMEWORK 5 Astronomy & Astrophysics Chapter 9 Due Wednesday, September 10, 2008 1. Compare the resolution and the light-gathering power of the human eye with those of a a) 10-cm telescope b) 4-m telescope The maximum possible antenna separation of t
   
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  Fusion2.pdf

  Georgia Tech PHYSICS 3021
  

  Nuclear Fusion Nuclear Physics Key Words: element, isotope, nucleon Number of nucleons = A = Z + N where Z is the number of protons N is the number of neutrons 1 u = 1/12 C12 1 u = 1.660540 x 10-24 g = 931.5 MeV/c2 Particle Masses Particle Proton N
   
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  Solutions11.pdf

  Georgia Tech PHYSICS 3021
  

  HOMEWORK 11 Astronomy & Astrophysics Due Monday, November 3, 2008 1. Verify that gravitational contraction will only power the Sun for about 10 million years. (Assume a constant luminosity.) E = (-3/10) G M2 / R E = (-0.3) (6.673 x 10 dyne cm /g ) (1
   
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  Schedule08.pdf

  Georgia Tech PHYSICS 3021
  

  STELLAR ASTROPHYSICS Physics 3021 - Fall 2008 Day M W F M W F M W F M W F M W F M W F M W F M W F M W F M W F M W F M W F M W F M W F M W F M W F Date Aug Aug Aug Aug Aug Aug Sep Sep Sep Sep Sep Sep Sep Sep Sep Sep Sep Sep Sep Oct Oct Oct Oct Oct Oct
   
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  Syllabus07.pdf

  Georgia Tech PHYSICS 3021
  

  STELLAR ASTROPHYSICS Physics 3021 Fall 2007 Time: Instructor: Office: Email: Web Page: Text: 2 MWF J. R. Sowell W102 Physics Building jim.sowell@physics.gatech.edu http:/capella.physics.gatech.edu Introductory Astronomy & Astrophysics (4th ed), by Z
   
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  Syllabus08.pdf

  Georgia Tech PHYSICS 3021
  

  STELLAR ASTROPHYSICS Physics 3021 Fall 2008 Time: Instructor: Office: Email: Web Page: Text: 2 MWF J. R. Sowell W102 Physics Building jim.sowell@physics.gatech.edu http:/www.astronomy.gatech.edu Introductory Astronomy & Astrophysics (4th ed), by Zei
   
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  Homework06.pdf

  Georgia Tech PHYSICS 3021
  

  HOMEWORK 6 Astronomy & Astrophysics Chapter 11 Due Monday, September 22, 2008 1. Astronomers living on Mars would define their astronomical unit in terms of the orbit of Mars. If they defined parsec in the same manner as we do, how many Martian as
   
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  Homework04.pdf

  Georgia Tech PHYSICS 3021
  

  HOMEWORK 4 Astronomy & Astrophysics Chapter 8 Due Monday, September 8, 2008 The two solar absorption lines given in the table below are produced when an electron makes an upward transition from the ground state orbital of the neutral Na I atom. ()
   
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  Star_Model_Description08.pdf

  Georgia Tech PHYSICS 3021
  

  STELLAR MODEL PROJECT Physics 3021 Fall 2008 Due Monday, November 24 at 2:00pm This project is to make a theoretical stellar model for a given stellar mass with the computer code STATSTAR. You are to calculate a homogenous, main-sequence model havin
   
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  Homework09.pdf

  Georgia Tech PHYSICS 3021
  

  HOMEWORK SET 9 Astronomy & Astrophysics Chapter 10 Due Monday, October 6, 2008 2. Compute the thermal Doppler width of the hydrogen line (H) at 486.1 nm formed in the Suns photosphere (T = 5800 K). 7. How would you unambiguously assign a sunspot