ASTR 201 (Cosmology)
homework & solutions

Weekly homework assignments are a major component of this course. They are designed to apply concepts discussed in class and to force you to think. Your grade will depend on your following these instructions carefully:

  1. All homework must be typewritten. Math symbols and calculations may be handwritten but must be legible.
  2. You must always show or explain how you reached a solution by recording intermediate steps in a calculation or describing your solution logically in words.
  3. Some problems require that you explain, discuss, or justify your answer. In these cases, your grade will be determined more by your reasoning and writing abilities than by the exact answer. The more specific your answer, the better. When appropriate, include some numbers and use quantitative reasoning.
  4. Although you may begin working with other students to solve these problems, once you understand how to solve them you must proceed on your own, obtaining your own data, measurements, etc. Your answers must be completely in your own words and not be a copy of anyone else's work.

Dr. McCarthy conducts optional homework study sessions each Tuesday afternoon from 2-4 PM in room 550. To participate, you must have already attempted all the problems. Students may be asked to help each other.

You may also get assistance during office hours and on AOL Instant Messenger on Wednesday evenings from 9-10 PM. Contact screen name "mccarthdw".

Select the appropriate item below for homework assignments and solutions:

  • Homework #13 [WORD, PDF] (due May 6)
  • Homework #12 [WORD, PDF] (due Apr. 24)
  • Homework #11 [WORD, PDF] (due Apr. 17)
  • Homework #10 [WORD, PDF] (due Apr. 10)
  • Homework #9 [WORD, PDF] (due Apr. 3)
  • Homework #8 [WORD, PDF] (due Mar. 27)
  • Homework #7 [WORD, PDF] (due Mar. 6)
  • Homework #6 [WORD, PDF] (due Feb. 28)
  • Homework #5 [WORD, PDF] (due Feb. 21)
  • Homework #4 [WORD, PDF] (due Feb. 14)
  • Homework #3 [WORD, PDF] (due Feb. 7)
  • Homework #2 [WORD, PDF] (due Jan. 31)
  • Homework #1 [WORD, PDF] (due Jan. 24)
  • Assignment #1 [WORD, PDF] (due Jan. 22)