A satellite is orbiting the Earth. What force keeps it in orbit? A. Frictional force B. Magnetic force C. Gravitational force D. Nuclear force 相关知识点: 试题来源: 解析 C。解析:卫星绕地球运行是因为地球对卫星的万有引力提供了向心力,使其能够在轨道上运行。A选项,太空中卫星几乎不受摩擦力;...
...m s2 [2](ii) Hence show that^(-2)=(4π^2)/(GM)r^2 [2](iii) Calculate the radius of the orbit of a geostationary satellite.radius =...m [2](iv) State the radius of another geostationary satellite of twice the mass orbiting the Earth.radius =...m [1] 相关知识点: ...
Today, whether a satellite orbiting Earth or a smartphone in your pocket, all of these devices boil down to changing light into numbers representing the brightness of the sky at each pixel (像素). Some stars in the sky slightly change their brightness over time. With digital technology, the ...
Use your answers in (i) to determine the reading on the meter. Give your answer to three significant figures. reading = N [2] © UCLES 2015 9702/42/M/J/15 PMT 5 (b) A satellite is orbiting the Earth. For an astronaut in the satellite, his sensation of weight is caused by the...
6 A spy satellite orbiting (沿轨道运行) 400 km above Earth is ___ capable of counting individual people in a crowd.相关知识点: 试题来源: 解析 highly 间谍卫星在距离地球400公里的轨道上运行,能够在人群中识别个体,这说明它拥有极高的分辨率。因此,填入形容词“highly”来描述卫星的这种能力,表示它“高...
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(b) (i) A satellite of mass 2520 kg is at a height of 1.39 × 107m above the surface of the Earth. Calculate the gravitational force of the Earth attracting the satellite. Give your answer to an appropriate number of significant figures. Worked out to be F = 2.45 x 103 The satellite...
The perturbing De Sitter potential per unit mass of a satellite orbiting the Earth which, in turns, moves in the external field of the Sun is [2] UDS=3μ⊙LL⊕⋅⋅LL2c2r⊕3. (1) Its doubly averaged expression, obtained by using the Keplerian ellipses as unperturbed reference orbits...
Question: The path of a satellite orbiting the earth causes it to pass directly over two tracking stations A and B, which are47km apart. When the satellite is on one side of the two stations, the angles of elevation at A and B ...
While ___the sun,the satellite has sent more than four billion bits of information back to the earth.A:having orbited B:being orbited C:having been orbited D:orbiting 【求详解,很难】 扫码下载作业帮搜索答疑一搜即得 答案解析 查看更多优质解析 解答一 举报 D:While orbiting the sun,.=While ...