Assignment VIII: week of Mar. 11th
This is the 8th assignment. You are encouraged to work on this by coming to the help sessions
(Thursday 121 MP202, Friday 12 at MP102) and grouping up with a few o
Assignment II: week of Jan. 14th
This is the 2nd of the 10 assignments. You are encouraged to work on this by coming to the help
sessions (Thursday 121 MP202, Friday 12 MP102) and grouping up with a
Assignment III: week of Jan. 23th
This is the 3nd of the 10 assignments. Attend the help sessions and work together with a couple
other students. You DO have to turn this one in, either in class, or s
Figure 1: On the summer solstice at local noon, in the city Syene, Egypt (which is close to the
Tropic of Cancer), the Sun would appear at the zenith, directly overhead (sun elavation of 90 ).
While i
Assignment IV: week of Jan. 30th
This is the 4th of the 10 assignments. You are encouraged to work on this by coming to the help
sessions (Thursday 121 MP202, Friday 12 MP102) and grouping up with a
Assignment VI: week of Feb. 25th
This is the 6th assignment. You are encouraged to work on this by coming to the help sessions
(Thursday 121, Friday 12 at MP202) and grouping up with a few other stu
Assignment V: week of Feb. 4th
This is the 5th of the 10 assignments. You are encouraged to work on this by coming to the help
sessions (Thursday 121 MP202, Friday 12 at MP102) and grouping up with
Assignment IX: week of Mar. 18th
This is the 9th assignment. You are encouraged to work on this by coming to the help sessions
(Thursday 121 MP202, Friday 12 at MP102) and grouping up with a few oth
Assignment X: week of March 25th
This is the 10th (and last!) assignment. You are encouraged to work on this by coming to the
help sessions (Thursday 121, Friday 12 at MP202) and grouping up with a
Assignment VII: week of Mar. 4th
This is the 7th assignment. You are encouraged to work on this by coming to the help sessions
(Thursday 121 MP202, Friday 12 at MP102) and grouping up with a few oth
The Origin and Evolution of the Universe full year course
AST 121

Fall 2015
CHAPTER
6
Exchange, Efficiency, and Prices
Voluntary exchange, or trade, is mutually benecial to the parties
involved in the transaction.
Chapter Outline
6.1 TwoPerson Exchange
The Edgeworth Exchange