本题目来源于试卷: Physics Unit5: Circular Motion & Gravitation,类别为 国际高中通用物理
[单选题]
For a spacecraft going from the Earth toward the Sun, at what distance from ckt;l . avt:4)j2guxp tqao 6dfs,yr,wgm ty;9t3) 5p zhe Earth will the gravitational forces due to the Sun and thegq 6sdptr;39zo ft,ymw5ay), Earth cancel? Earth's mass: Me = $5.98 \times 10^{24} \; kg$ the Sun's mass: Ms = $1.99 \times 10^{30} \; kg$ Earth-Sun distance: r = $1.50 \times 10^{11} \; m$
A. $1.30 \times 10^{8} \; m$
B. $2.60 \times 10^{8} \; m$
C. $1.30 \times 10^{10} \; m$
D. $2.60 \times 10^{10} \; m$
参考答案: B
本题详细解析:
暂无
|