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Physics 15 Online
OpenStudy (anonymous):

1. Look at the shape of Mercury’s orbit. Is it a circle? (The polar graph paper is a perfect circle.) 2. If the shape of Mercury’s orbit is not a circle, then how would you describe the shape? Does it have a geometric name? 3. Where is the position of the sun within the orbit? Is it at the center? If not, how would you describe the sun’s location?

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