C 正确答案:C 解析:根据文章第四段中的第二句“Although the Sun is larger than the Moon.The Moon is closerto Earth and,therefore,its gravitational force is approximately 2.2 times greater.”判断可知,地球对太阳和月球的引力大小是由它们与地球之间的距离决定的。反馈...
The gravitational force of the Sun and the Moon upon Earth depends on ___. A. the depth of the oceans B. their distance to Earth C. their size D. their weight 相关知识点: 试题来源: 解析 B 答案:B 解析:分析第三段可知,和月亮对地球的引力与其和地球的距离有关。反馈...
What is the gravitational force of Mercury? Does the moon have gravitational force? The mass of the moon is about one eighty-first, and its radius one-fourth, that of the Earth. What is the acceleration due to gravity on the surface of the moon?
–TherotationoftheEartharoundthat centerofmassinducesacentrifugal accelerationdirectedawayfromthe Moon –TheMoonproducesagravitational attractionontheEarth –Theresultingforce(centrifugal acceleration+gravitationalattraction) isresponsibleforthetides •TidaleffectoftheSun:sameprinciple but45%smallereffectbecauseof ...
The Moon-to-Earth trajectories of "detour" type are found and studied in frame of the Moon-Earth-Sun-particle system. These trajectories use a passive flight to the Earth from an initial elliptic selenocentric orbit with a high aposelenium and differ from usual ones of a direct flight to ...
The earth’s gravitational field reaches far closer to the moon than does the moon’s to earth. Thus, it will be necessary to fire an earthbound rocket only a few thousand miles away from the moon to reach a point where the rocket will drift to earth under the earth’s gravitational ...
Ivashkin V V 2004c On the Moon-to-Earth Trajectories with Gravitational Escape from the Moon Attraction : Presented at the 18th International Symposium of Space Flight Dynamics, held in Munich, Germany, 11–16 October, 2004. Paper P0111, http://www.issfd.dlr.de/papers/P0111. pdf....
Under the influence of gravitational force, the Earth has been orbiting the sun for a few billion years. The moon has been orbiting the Earth for almost as long. As they orbit, every now and then the sun, moon and Earth all line up. The positioning of the moon exactly between the sun...
gravitational force - (physics) the force of attraction between all masses in the universe; especially the attraction of the earth's mass for bodies near its surface; "the more remote the body the less the gravity"; "the gravitation between two bodies is proportional to the product of their...