您所在的当前位置：高中物理试题 >

万有引力定律及其应用

> 卡文迪什通过实验研究得出万有引力恒量的实验装置示意图是图______________；库仑通过实验研究得出电荷之间相互作用力规律的实验装置示意图是图______________。

问题：

发布时间：2024-09-13

卡文迪什通过实验研究得出万有引力恒量的实验装置示意图是图；库仑通过实验研究得出电荷之间相互作用力规律的实验装置示意图是图。

参考答案：

提问用户：5H***baP

可能感兴趣的题目：

1 Once upon a time, there was a large mountainside, where an eagle"s nest rested. The eagle"s nest contained four 1 eagle eggs. On e day an earthquake rocked (使震动) the mountain 2 one of the eggs to roll down the mountain, 3 a chicken farm, which was in the valley below. The chickens knew that they must 4 and care for the eagle’s egg, so an old hen (母鸡) 5 to hatch (孵) and raise the large egg. One day, the egg hatched and a beautiful eagle was born. 6 , however, the eagle was raised to be a(n) 7 . Soon, the eagle believed he was 8 more than a chicken. The eagle loved his home and family, 9 his spirit cried out for more. While playing a game on the farm one day, the eagle looked to the skies above and 10 a group of eagles soaring in the skies. "Oh," the eagle 11 , "I wish I could soar like those birds." The chickens shouted with 12 , "You cannot soar with those birds. You are a chicken and chickens do not soar." The eagle 13 staring at his real family up above, 14 that he could be with them. Each time the eagle would let his 15 be known, he was told it couldn’t be done. That is 16 the eagle learned to believe. Slowly, the eagle 17 dreaming and continued to live his life like a chicken. 18 , after a long life as a chicken, the eagle 19 . You become what you believe you are; so if you ever dream to become an eagle, 20 your dreams, not the words of a chicken. ( )1. A. large ( )2. A. guiding ( )3. A. on ( )4. A. introduce ( )5. A. offered ( )6. A. Carefully ( )7. A. chicken ( )8. A. something ( )9. A. and ( )10. A. noticed ( )11. A . cried ( )12. A. excite men ( )13. A. approached ( )14. A. promising ( )15. A. suggestion ( )16. A. what ( )17. A. went ( )18. A. Happily ( )19. A. gave up ( )20. A. steal B. curious B. blowing B. over B. punish B. regretted B. Gently B. eagle B. everything B. but B. recognized B. smiled B. anger B. avoided B. proving B. advantage B. why B. enjoyed B. Finally B. broke down B. follow C. small C. causing C. past C. protect C. managed C. Sadly C. hero C. anything C. so C. respected C. argued C. laughter C. continued C. believing C. dream C. how C. began C. Quickly C. passed away C. have D. fortunate D. inviting D. to D. share D. turned D. Luckily D. fool D. nothing D. however D. watched D. explained D. surprise D. considered D. dreaming D. discovery D. when D. stopped D. Probably D. died out D. remember
2 若向量、满足，则在方向上的投影为
3 Please do me a favor-_____ my friend Mr. Smith to Youth Theater at 7:30 tonight. [ ] A. to invite B. inviting C. invited D. invite
4 为调查某市中学生平均每人每天参加体育锻炼时间X（单位：分钟），按锻炼时间分下列四种情况统计：①0～10分钟；②11～20分钟；③21～30分钟；④30分钟以上，有10000名中学生参加了此项活动，如图是此次调查中某一项的流程图，若平均每天参加体育锻炼的时间在0～20分钟的学生的频率是0.15，则输出的结果为______．
5 下列湿地，分布在高纬度地区的是 A.湖泊湿地 B.沼泽湿地 C.河流湿地 D.海岸湿地
6 甲、乙两相邻的化工厂，排放的污水经处理后，仍然各溶有以下八种离子（Ag +、Fe 3+、Ba 2+、Na +、Cl -、SO 4 2-、NO 3 -、OH -）中各不相同的4种，若单独排放，则造成环境污染，如果将甲、乙两厂的污水按适当比例充分混合，再经沉淀后，排放的污水转变为无色澄清的NaNO 3溶液，污染程度大为降低，又经测定，甲厂污水的pH大于7，试推断：（l）甲厂中含有的离子：______；（2）乙厂中含有的离子是______．
7 质量为1kg的物体做变速直线运动，它的速度—时间图像如图所示，则该物体在20s内所受合外力的功和冲量的大小分别是（） A．10J，10N·s B．25J，—10N·s C．0J，10N·s D．0J，—10N·s
8 阅读理解。 Edmund Halley was an English scientist who lived over 200years ago. He studied the observations of comets which other scientists had made. The orbit of one particular comet was a very difficult mathematical problem. He could not figure it out. Neither could other scientists who dealt with such problems. However, Halley had a friend named Isaac Newton. Who was a brilliant mathematician. Newton thought he had already which he had done it. He told Halley that the orbit of a comet had the shape of an ellipse. Now Halley set to work. He figured out the orbits of some of the comets that had been observed by scientist. He made a surprising discovery. The comets that had appeared in the years 1531, 1607 and 1682 all had the same orbit. Yet their appearances had been 75 to 76 years apart. This seemed very strange to Halley. Three different comets followed the same orbit. The more Halley thought about it, the more he thought that there had not been three different comets, as people thought. He decided that they had simply seen the same comet three times. The comet had gone away and had come back again. It was an astonishing idea! Halley felt certain enough to make a prediction of what would happen in the future. He decided t hat this comet would appear in the year 1758. There were 53 years to go before Halley"s prediction could be tested. In 1758 the com et appeared in the sky. Halley did not see it, for he had died some years before. Ever since then that comet been called Halley"s comet, in his honor. 1. Halley made his discovery _____. A. by doing experiments B. by means of his own careful observation C. by using the work of other scientists D. by chance 2. Halley made a surprising but correct prediction in the year _____. A.1704 B.1705 C. 1706 D.1707 3. This text in general is about _____. A. Halley and other scientists B. the orbit of a comet C. Newton and Halley D. Halley and Halley 4. Which of the following is TRUE? A. Edmund Halley was an American scientist B. Halley made his discovery by doing experiments. C. Isaac Newton was a famous mathematician. D. The orbit of a comet had the shape of an around.
9 ____ the tower building,where you see the whole city. [ ] A. Standing on the top of B .If you climb to C. When you reach the top of D. Get to the top of
10 Too much drinking will do________to your health；you should take the doctor’s advice. A．harm B． trouble C．damage D．hurt