Planetary atmospheres

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Homework Statement


calculate approximately how much more massive the Earth would have to be before it could retain a significant hydrogen atmosphere, assuming the Earth’s density to be the same as its current value.


Homework Equations


Temperature limit to retain hydrogen in the earths atmosphere: T «< 5042 (Mp/Rp ) *mn
Mp= ratio of mass of planet/body to Earth’s RE
Rp = ratio of radius of planet/body to Earth’s
mn= atomic mass number of gas particle


The Attempt at a Solution


not sure how to begin , any tips much appreciated
 

Answers and Replies

  • #2
Bystander
Science Advisor
Homework Helper
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not sure how to begin
Reread the question for starters --- what's showing in "relevant equations" does NOT look terribly correct/useful.
 

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