Physics Unit33: Astrophysics and Cosmology (id: fb1548cec)

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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 apparent brightnessx6zto/-4 fwxm( mmr3 k2c b9eu ofdj;v ( vevbi l(48dun+ a star is $1.0 \times 10^{-12} \; W/m^{2}$ and the peak wavelength is 600 nm. Estimate its distance from us.

A. $0.90 \; pc$
B. $9.0 \; pc$
C. $90 \; pc$
D. $900 \; pc$


参考答案:  C


本题详细解析: 暂无