本题目来源于试卷: Physics Unit5: Circular Motion & Gravitation，类别为 通用国际物理
[单选题]
Two moons orbit a planet in nearly circular orbiziwc a-mb7vmm(l) zt vte*(53 ts. Moon qrr8br.v* ao,6 ny ;cpA has orbital radius r, and moon B has orbital radius 4r. Moon A takes 20 days to completecrb ,*.o6v anr8y;pqr one orbit. How long does it take moon B to complete an orbit?
A. $20 \; days$
B. $80 \; days$
C. $160 \; days$
D. $320 \; days$
参考答案: C
本题详细解析:
暂无
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