本题目来源于试卷: Physics Unit8: Rotational Motion,类别为 Generic Physics
[单选题]
The Earth orbits the6.e8eyn kgz (*a3 ph1g,a s78lklmutw .;aq hyz*c 3dtxin8 l7x(9f gySun in an elliptical orbit. Ignore any friction which may be present. What happens over time to the Earth' .qc3fd8 xgat9* ;ln(xz iyh7ys angular momentum about the Sun?
A. It continually increases.
B. It continually decreases.
C. It remains constant.
D. It increases during some parts of the orbit, and decreases during others.
参考答案: C
本题详细解析:
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