https://www.astro-init.top/index.php?action=history&feed=atom&title=2019%E5%B9%B4USAAAO%E5%86%B3%E8%B5%9B%E7%AC%AC9%E9%A2%98 2026-05-06T08:32:15Z 本wiki的该页面的版本历史 MediaWiki 1.32.2 https://www.astro-init.top/index.php?title=2019%E5%B9%B4USAAAO%E5%86%B3%E8%B5%9B%E7%AC%AC9%E9%A2%98&diff=1728&oldid=prev 2020-03-07T10:10:24Z

<p></p> <table class="diff diff-contentalign-left" data-mw="interface"> <col class="diff-marker" /> <col class="diff-content" /> <col class="diff-marker" /> <col class="diff-content" /> <tr class="diff-title" lang="zh-Hans-CN"> <td colspan="2" style="background-color: #fff; color: #222; text-align: center;">←上一版本</td> <td colspan="2" style="background-color: #fff; color: #222; text-align: center;">2020年3月7日 (六) 10:10的版本</td> </tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l2" >第2行：</td> <td colspan="2" class="diff-lineno">第2行：</td></tr> <tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>9. (15 points)  </div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>9. (15 points)  </div></td></tr> <tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td></tr> <tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>a) Find the shortest distance from Boston ($$42.36010^{\circ} N, 71.05890^{\circ} W$$) to Beijing (39.90420^{\circ} N, 116.40740^{\circ} E)traveling along the Earth’s surface. Assume that the Earth is a uniform sphere of radius 6371 km.  </div></td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>a) Find the shortest distance from Boston ($$42.36010^{\circ} N, 71.05890^{\circ} W$$) to Beijing (<ins class="diffchange diffchange-inline">$$</ins>39.90420^{\circ} N, 116.40740^{\circ} E<ins class="diffchange diffchange-inline">$$</ins>)traveling along the Earth’s surface. Assume that the Earth is a uniform sphere of radius 6371 km.  </div></td></tr> <tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td></tr> <tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>b) What fraction of the path lies within the Arctic circle (north of 66.56080^{\circ} N)?</div></td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>b) What fraction of the path lies within the Arctic circle (north of <ins class="diffchange diffchange-inline">$$</ins>66.56080^{\circ} N<ins class="diffchange diffchange-inline">$$</ins>)?</div></td></tr> </table>

Jingsong Guo https://www.astro-init.top/index.php?title=2019%E5%B9%B4USAAAO%E5%86%B3%E8%B5%9B%E7%AC%AC9%E9%A2%98&diff=1726&oldid=prev 2020-03-07T10:09:47Z

<p></p> <table class="diff diff-contentalign-left" data-mw="interface"> <col class="diff-marker" /> <col class="diff-content" /> <col class="diff-marker" /> <col class="diff-content" /> <tr class="diff-title" lang="zh-Hans-CN"> <td colspan="2" style="background-color: #fff; color: #222; text-align: center;">←上一版本</td> <td colspan="2" style="background-color: #fff; color: #222; text-align: center;">2020年3月7日 (六) 10:09的版本</td> </tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l2" >第2行：</td> <td colspan="2" class="diff-lineno">第2行：</td></tr> <tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>9. (15 points)  </div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>9. (15 points)  </div></td></tr> <tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td></tr> <tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>a) Find the shortest distance from Boston (42.36010 N, 71.05890 W) to Beijing (39.90420 N, 116.40740 E)traveling along the Earth’s surface. Assume that the Earth is a uniform sphere of radius 6371 km.  </div></td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>a) Find the shortest distance from Boston (<ins class="diffchange diffchange-inline">$$</ins>42.36010<ins class="diffchange diffchange-inline">^{\circ} </ins>N, 71.05890<ins class="diffchange diffchange-inline">^{\circ} </ins>W<ins class="diffchange diffchange-inline">$$</ins>) to Beijing (39.90420<ins class="diffchange diffchange-inline">^{\circ} </ins>N, 116.40740<ins class="diffchange diffchange-inline">^{\circ} </ins>E)traveling along the Earth’s surface. Assume that the Earth is a uniform sphere of radius 6371 km.  </div></td></tr> <tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td></tr> <tr><td class='diff-marker'>−</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>b) What fraction of the path lies within the Arctic circle (north of 66.56080 N)?</div></td><td class='diff-marker'>+</td><td style="color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>b) What fraction of the path lies within the Arctic circle (north of 66.56080<ins class="diffchange diffchange-inline">^{\circ} </ins>N)?</div></td></tr> </table>

Jingsong Guo https://www.astro-init.top/index.php?title=2019%E5%B9%B4USAAAO%E5%86%B3%E8%B5%9B%E7%AC%AC9%E9%A2%98&diff=1721&oldid=prev 2020-03-07T09:52:55Z

<p>创建页面，内容为“==英文题目== 9. (15 points) a) Find the shortest distance from Boston (42.36010 N, 71.05890 W) to Beijing (39.90420 N, 116.40740 E)traveling along the Earth’…”</p> <p><b>新页面</b></p><div>==英文题目==<br /> 9. (15 points) <br /> <br /> a) Find the shortest distance from Boston (42.36010 N, 71.05890 W) to Beijing (39.90420 N, 116.40740 E)traveling along the Earth’s surface. Assume that the Earth is a uniform sphere of radius 6371 km. <br /> <br /> b) What fraction of the path lies within the Arctic circle (north of 66.56080 N)?</div>

Jingsong Guo