本题目来源于试卷: Newton’s law of motion，类别为 美国物理杯赛(Physics Bowl)
[单选题]
04.16: A 20 kg boulder restsgkyjr(2+ eu q. on the s +x2 fh9na6cnxgy22ohurface of the Earth. Assume the Earth has mas n9 hx2g+nh2ofayx 26cs $5.98 \times 10^{24} \; kg$ and $g = 10\;m/s^{2}$ . What is the magnitude of the gravitational force that the boulder exerts on the Earth?
A. $5.98 \times 10^{25} \; N$
B. $5.98 \times 10^{24} \; N$
C. 200 N
D. 20 N
E. The boulder exerts no force on the Earth
参考答案: C
本题详细解析:
暂无
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