Physics Unit33: Astrophysics and Cosmology (id: 2e18e12a7)

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本题目来源于试卷: Physics Unit33: Astrophysics and Cosmology，类别为 Generic Physics

[单选题]
The Earth's orbit has y(fqrjvv k fb0+ -+y/ea n8;sfd+b fv (,w6qwummean radius of $1.5 \times 10^{8} \; km$. Over a six-month period, the apparent position of a particular star varies by $0.00014^{\circ}$ due to parallax. How distant is the star, in ly? (1 ly = $9.46 \times 10^{15} \; m$)

A. $0.13 \; ly$
B. $1.3 \; ly$
C. $13 \; ly$
D. $130 \; ly$


参考答案:  C


本题详细解析: 暂无