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#1
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1.the structure of a comet can be described in five distinguishable parts.list these five components in order of their physical size.
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2.a particular star in a binary star system orbits the other in an elliptical orbit with a semi-major axis 3AU and a period of 5 years.what is the sum of the masses of the two stars in the system?

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2013/06/28 Fri 16:26:08
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Re: [°ÝÃD] ¤Ñ¤å¾Ç°ÝÃD
#2
Atropos
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¡° ¤Þ­z¡mglesses1991 (yo)¡n¤§»Ê¨¥¡G
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: §Æ±æ¦³­I´ºª¾ÃѪº¤H¥i¥HÀ°¦£´£¨Ñµª®×©Î¨£¸Ñ :)¸U¤À·PÁÂ!
: 1.the structure of a comet can be described in five distinguishable parts.
: list these five components in order of their physical size.
: (¥L¬O­n°Ýµ²ºc¶Ü?³o¼Ëªº¸Ü¨º´N¬O¼z®Ö.¼z“º.¼z§ÀÅo?)
: 2.a particular star in a binary star system orbits the other in an elliptical
: orbit with a semi-major axis 3AU and a period of 5 years.what is the sum of
: the masses of the two stars in the system?

http://psroc.phys.ntu.edu.tw/bimonth/download.php?d=2&cpid=139&did=12
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2013/06/28 Fri 18:54:52
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