Question 1
Rank the following hypothetical planets -- all of which have the same total mass and same radius -- from lowest moment of inertia to highest moment of inertia:
1) A uniform sphere of mixed up rock and iron
2) A rocky planet with an iron core
3) A rocky planet with an iron crust
4) A uranium planet with a thick atmosphere (where the radius is measured to the top of the atmosphere)
Your answer should consist of integer, like "1234" without the quotes, if you think that is the right order.