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万有引力与航天是高中物理的重要内容,也是高考与物理竞赛命题的热点.在2011年全国高中应用物理知识竞赛和第28届全国高中物理竞赛中,分别以地球同步通讯卫星和绳系卫星切入,对万有引力与航天及其相关知识进行了重点考查.题1.(2011年全国高中应用物理知识竞赛)地球上空有人造地球同步通讯卫星,它们向地球发射微波.但无论
Gravitation and aerospace are important contents of high school physics, and are also hot spots for college entrance exams and physics contest propositions. In 2011, the national high school applied physics knowledge contest and the 28th national high school physics competition were respectively cut by geosynchronous communication satellites and tethered satellites. Gravity and space and its related knowledge were examined in detail. Question 1. (National Senior High School Applied Physics Knowledge Competition 2011) There are man-made geosynchronous communication satellites over the Earth. They emit microwaves to the Earth. However,