takehome_midterm - Take-home Midterm Exam. Please allow...

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Take-home Midterm Exam. Please allow yourself only 3 hours. You may look up any constants (G, charge of electron etc) and physical data (heat capacities, albedo of a planet or mass of a moon, etc). You may also use your notes and old homework papers, but not any textbooks or websites (except to look up constants, etc). Please give your answers in SI units! For graphs, please use excel or similar program. Exam is due next week on Friday, at the beginning of class! Remember, I will be away on Wednesday so class is cancelled that day. 1. Neptune is about 17 times the mass of the Earth. Give an estimate of what its atmospheric temperature would need to be in order for it to have lost a significant amount of its hydrogen gas since it formed, >4 billion years ago. State any assumptions you make to solve this problem. 2. Suppose you discover a planet orbiting a star that is 0.5 times the mass of the Sun. What is the orbital period of that planet? Can you tel anything about the mass of that
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This note was uploaded on 09/08/2010 for the course ASTR 155 at San Jose State University .

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takehome_midterm - Take-home Midterm Exam. Please allow...

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