人造卫星题.、某人造卫星运动的轨道可近似看作是以地心为中心的圆,由于阻力作用,人造卫星到地心的距离从r1慢慢变到r2,用Ek1、Ek2分别表示卫星在这两个轨道上的动能,则( )A.r1<r2,Ek1<
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![人造卫星题.、某人造卫星运动的轨道可近似看作是以地心为中心的圆,由于阻力作用,人造卫星到地心的距离从r1慢慢变到r2,用Ek1、Ek2分别表示卫星在这两个轨道上的动能,则( )A.r1<r2,Ek1<](/uploads/image/z/5374688-32-8.jpg?t=%E4%BA%BA%E9%80%A0%E5%8D%AB%E6%98%9F%E9%A2%98.%E3%80%81%E6%9F%90%E4%BA%BA%E9%80%A0%E5%8D%AB%E6%98%9F%E8%BF%90%E5%8A%A8%E7%9A%84%E8%BD%A8%E9%81%93%E5%8F%AF%E8%BF%91%E4%BC%BC%E7%9C%8B%E4%BD%9C%E6%98%AF%E4%BB%A5%E5%9C%B0%E5%BF%83%E4%B8%BA%E4%B8%AD%E5%BF%83%E7%9A%84%E5%9C%86%2C%E7%94%B1%E4%BA%8E%E9%98%BB%E5%8A%9B%E4%BD%9C%E7%94%A8%2C%E4%BA%BA%E9%80%A0%E5%8D%AB%E6%98%9F%E5%88%B0%E5%9C%B0%E5%BF%83%E7%9A%84%E8%B7%9D%E7%A6%BB%E4%BB%8Er1%E6%85%A2%E6%85%A2%E5%8F%98%E5%88%B0r2%2C%E7%94%A8Ek1%E3%80%81Ek2%E5%88%86%E5%88%AB%E8%A1%A8%E7%A4%BA%E5%8D%AB%E6%98%9F%E5%9C%A8%E8%BF%99%E4%B8%A4%E4%B8%AA%E8%BD%A8%E9%81%93%E4%B8%8A%E7%9A%84%E5%8A%A8%E8%83%BD%2C%E5%88%99%EF%BC%88+%EF%BC%89A%EF%BC%8Er1%EF%BC%9Cr2%2CEk1%EF%BC%9C)
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