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Author Question: During winter, the northern polar cap of Mars is made of A) a layer of carbon dioxide ice B) a ... (Read 90 times)

debasdf

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During winter, the northern polar cap of Mars is made of
 
  A) a layer of carbon dioxide ice
  B) a layer of water ice
  C) carbon dioxide ice overlaying water ice
  D) water ice overlaying carbon dioxide ice

Question 2

Much to your chagrin, you find that to be the case: Despite having been rescued during the midterm, you are, once again, lost in a body of water. Fortunately, you still have your astronomical tables and instruments, as well as a UT clock. You thereby put together the following description of your situation:  It is the day of the summer solstice.  The Sun is on your meridian at an altitude 73.5 in the south.  The UT clock reads 19:00. a. What is your latitude? How do you know? b. What is your longitude? How do you know?




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olderstudent

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Answer to Question 1

C

Answer to Question 2

a. Your latitude is 40N, where the Sun crosses the meridian at an altitude of 73.5S on the summer solstice.
b. Your longitude is 105W. The Sun is on your meridian, so it is noon for you. The UT clock reads 19:00, or 7 P.M., so Greenwich is 7 hours ahead of you. Each hour represents 15 of longitude, so 7 hours means 105; you are west of Greenwich because your time is behind. In fact, it's next year's summer solstice, and you are floating on a small raft in the Boulder Reservoir. You are lost only because you have become disoriented while contemplating the four-dimensional nature of spacetime and the expansion of the universe.




debasdf

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Reply 2 on: Jul 27, 2018
Great answer, keep it coming :)


kusterl

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Reply 3 on: Yesterday
Gracias!

 

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