百度试题 结果1 题目4. The orientation of the planet's orbit is changing(change)cotinously. 相关知识点: 试题来源: 解析 答案见上 反馈 收藏
44.A planet of mass m orbiting a star of mass M at speed v.The orbit is circular with radius R.What would the planet’s velocity be if it orbited at a radius of 2R?(A)\5v/2(B)\5v/(√2)(C)\5v(D)\5v(E)\52v这题为什么不能用 a=V2/R,a不变所以V=√2 V来做?61.\5 ...
A. The speed of the planet. B. The size of the planet. C. The gravitational force between the sun and the planet. D. The color of the planet. 相关知识点: 试题来源: 解析 C。解析:太阳和行星之间的引力使行星保持在其轨道上。A 速度不是决定轨道的主要因素;B 行星大小无关;D 行星颜色更与...
百度试题 结果1 题目6. The planet is probably in _ orbit_(轨道) around a small star. 相关知识点: 试题来源: 解析 答案见上 反馈 收藏
百度试题 结果1 题目4. The planet is probably in orbit __ (轨道) around a small star. 相关知识点: 试题来源: 解析 答案见上 反馈 收藏
百度试题 结果1 题目3. The planet is probably in orbit(轨道) around a small star. 相关知识点: 试题来源: 解析 答案见上 反馈 收藏
百度试题 结果1 题目3. The planet is probably in orbit轨道)around asmall star. 相关知识点: 试题来源: 解析 答案见上 反馈 收藏
The quality of space to ground interaction and communication is also much improved. The space lecture eight years ago sometimes faced the challenges of the video freezing and an unclear picture, but this year’s lecture is different. Technology has developed a lot. For example, with the help ...
Venus (金星) is the brightest planet in the sky. The orbit of Venus is inside the orbit of Earth. Venus is always relatively close to the Sun in the sky. When Venus is on one side of the Sun, it’s following the Sun in the sky and brightens into view shortly after the Sun sets...
A planet on an inclined orbit as an explanation of the warp in the Beta Pictoris disk We consider the deformation that has recently been observed in the inner part of the circumstellar disc around 尾 Pictoris with the HST. Our recent ground-... D Mouillet,JD Larwood,JCB Papaloizou,.....