“2019年USAAAO决赛第3题”的版本间的差异
来自astro-init
Jingsong Guo（讨论 | 贡献） （创建页面，内容为“==英文题目== 3. (7 points) You are in the northern hemisphere and are observing rise of star A with declination δ = -8 degrees, and at the same time a star B w…”） |
Jingsong Guo（讨论 | 贡献） |
||
| 第1行： | 第1行： | ||
==英文题目== | ==英文题目== | ||
| − | 3. (7 points) You are in the northern hemisphere and are observing rise of star A with declination δ = -8 | + | 3. (7 points) You are in the northern hemisphere and are observing rise of star A with declination $$δ = -8^{\circ}$$, and at the same time a star B with declination $$δ = +16^{\circ}$$ is setting. What will happen first: next setting of the star A or rising of the star B? |
2020年3月7日 (六) 17:40的最新版本
英文题目
3. (7 points) You are in the northern hemisphere and are observing rise of star A with declination $$δ = -8^{\circ}$$, and at the same time a star B with declination $$δ = +16^{\circ}$$ is setting. What will happen first: next setting of the star A or rising of the star B?
