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Astronomy 101 Problem Set #9 |  |
This Problem Set is due by 1:00 pm on Thursday, 10 November
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Astronomy 101 Problem Set #9 | |
This Problem Set is due by 1:00 pm on Thursday, 10 November
Problem #1: Jupiter's moon Metis has a radius of only 20 km, and a mass of 9 x 1016 kg.
a) Calculate this moon's average density.
b) Based on your result above, would you say that Metis is made primarily of rock or ice? Justify your answer.
Problem #2: Saturn is currently 9.03 A.U. away from Earth. Calculate how long it takes for a radio signal sent from Earth to be received by the Cassini spaccecraft in orbit around Saturn.
Problem #3: a) Calculate the radius of the Roche limit for the Earth.
b) The Space Shuttle orbits the Earth at an altitude of approximately 150 km. Does it orbit inside the Earth's Roche limit? If so, why isn't it ripped apart?
