This topic created in 2137 days ago, the information mentioned may be changed or developed.
 |
1
takemeaway Jul 14, 2020
由于该站每 90 分钟绕地球运行一次，因此大约每 45 分钟就会出现一次日出或日落。。。
请问：空间站的运动速度为多少？ |
 |
2
lswl66 Jul 14, 2020
@takemeaway 可怕。。。
|
 |
3
qwertqwert12345 Jul 14, 2020
好评
|
 |
4
wd Jul 15, 2020 via iPhone
@takemeaway #1 好像是送分题？拿地球赤道周长算一下？
|
 |
7
no1xsyzy Jul 15, 2020
@takemeaway #1 https://www.wolframalpha.com/input/?i=%28gravity+constant+*+mass+of+earth+*+%282*pi%2F%2890+minutes%29%29%29%5E%281%2F3%29
约 7741 m/s https://zh.wikipedia.org/wiki/%E5%9B%BD%E9%99%85%E7%A9%BA%E9%97%B4%E7%AB%99 实际是 7,706.6 m/s 计算误差大约是 +0.45% 实际上周期是 91 分钟，计算结果是 7712 m/s，误差仅 +0.07% |
|
8
takemeaway Jul 15, 2020
@no1xsyzy 哈哈，正确
|
Select Language