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{\bf Introduction to Astrophysics I, 29:119\\
     Fall, 2008\\
Third Homework Set...September 11, 2008.\\ Due September 25, 2008}\\
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Show calculations and give reasons for your answers. Don't go around 
confused and despondent; if you do not know how to get started, ask me for help. All problem numbers refer to the first edition of the book.\\


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{\bf (1)} Problem 3.7 from textbook.  \\

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{\bf (2)}  Problem 3.8 from textbook.\\

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{\bf (3)} Problem 3.9, parts (a), (e), (f), and (g) \\ 

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{\bf (4)}  Problem 3.10\\

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{\bf (5)}  Problem 3.12 (this is one where {\em Mathematica} would be very useful) \\

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{\bf (6)}  Problem 3.13\\

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{\bf (7)}  Problem 3.14\\




 
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