题库网 (tiku.one)

 找回密码
 立即注册

 

      

上传图片附件

未使用图片

小贴士: 允许的图片文件格式为: gif, jpg, jpeg, png, webp,上传完成后会在上方生成预览,用鼠标连续双击缩略图,或拖动缩略图,该图片就被绑定至本题,显示在题目下方

本次作答已使用

小贴士: 此栏目显示的是当前作答使用的所有图片,绑定到某一题目的图片同时会显示在该题目下方; 删除使用的图片会将其转移到<未使用图片>类别


习题练习:.Gravity..



 作者: admin发布日期: 2024-08-22 23:24   总分: 22分  得分: _____________

答题人: 匿名未登录  开始时间: 24年08月17日 16:00  切换到: 整卷模式

标记此题
1#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  08.19: Kepler’s Second Law about “sweeping out equal areas in equal time” ca+9s0lk-os;/:yhy9dl ps1 z7e di 2x v:ondyo zn be derived mosli7p:d sd1 do:9z-9k;zhy esoxny+2 0/voylst directly from which conservation law?

参考答案:    

标记此题
2#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  16.17:“All planets in the solar system follow elliptical orb.m9mp3u 2m8 u9i4t2 ef b od)b;lwyhegits with the Sun located a9tud2ufbg 4 2h3peo )8 lwmi9. yme;mbt one focus of the ellipse.” This statement is best summarized by which one of the following choices?

参考答案:    

标记此题
3#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  99.21: What happens to the fosop3txzbh 0j2 :-9buyma yn94rce of gravitational attraction between two small objects if the mass of each object is doubled and the distance between their centers is9zasmb:34 xy0ohu2t pn yj -b9 doubled?

参考答案:    

标记此题
4#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  95.09 Two spherical bodies attract each other with a gravitationa8y-(; maxkft al force of 4.0 N. What will at8y ( -xfa;mkbe the force if the distance between them is doubled?

参考答案:    

标记此题
5#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  14.27: Two spherical, non-rotating planets, X andY, have the same un/hnx9g )p- 4d,: ohlr(fxd kqqiform densit9lroh) 4-fqx xd kqd ,pgn:(/hy. Planet X has twice the radius of Planet Y. Let $g_x$ and $g_y$ represent the accelerations due to gravity at the surfaces of Planet X and Planet Y, respectively. What is the ratio of $g_x:g_y$?

参考答案:    

标记此题
6#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  16.46 Two spherical, non-rotating/ (tmbd9ytpnkp6 -j: n planets, X and Y, have the same uniform density. Planet X has twice the radius of Planet Y. Lentytd-6: / n pk(9mbpjt $v_x$ and $v_y$ represent the escape speed at the surfaces of Planet X and Planet Y, respectively. What is the ratio of $v_x:v_y$?

参考答案:    

标记此题
7#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  01.16: The mass of a planet can be calculated if it is orbited by 0lhaen3s( 1jma small satellite by setting s3 majlh10e(n the gravitational force on the satellite equal to the centripetal force on the satellite. Which of the following would NOT be required in this calculation?

参考答案:    

标记此题
8#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  99.11: Assume that the l+ou1 0kzcp7uq .3;ilg lgm 2jEarth attracts John Glenn with a gravitational force F at the surface of the Earth. When he made his famous second flight in orbit, the gravitational force on John Glenn while he was in orbit1 gup 3lj+0kgqmclzu27. ;ilo was closest to which of the following?

参考答案:    

标记此题
9#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  14.30: Considering only the Moon djivzt1 .1.il6 zisxx8df:+v 3i- red-Earth system (ignore any influence of the Sun), which one of the following best expressesxifs.1ivdx83tzv1 j delir.zi : 6+d- the magnitude of the Moon’s acceleration about the Earth?

参考答案:    

标记此题
10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  02.19: As a rocket blasts aw+w7)um rhpas1 ay from the earth with a cargo for the international s w+arh s1u7mp)pace station, which of the following graphs would best represent the gravitational force on the cargo versus distance from the surface of the Earth?


参考答案:    

标记此题
11#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  99.33: One object at the surface of the Moon experiences the same gravitatios1;fg a.apf )dnal force as a second object at the surface o.f) ;ds1faag pf the Earth. Which of the following would be a reasonable conclusion?

参考答案:    

标记此题
12#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  00.24 Consider an object that has a mass, m, and a weight, W, at the surjclgdfz7;d.5w ( j6btface of the moon. If we assume the moon has a nearly uniform density, which of the following would be closest to the object’s mass and weight at a distance halfway7d cw;5t lj.f g(6bzdj between Moon’s center and its surface?

参考答案:    

标记此题
13#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  96.23: A hypothetical planetyyx;t5 r(nwri17d0 rh has seven times the mass of Earth and twice the radius of Earth. The magnitude ox 51rhi0rn y(7tr;wy df the gravitational acceleration at the surface of this planet is most nearly:

参考答案:    

标记此题
14#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  98.24: A planet has a radius one-half that of Earth and aarc vgdu an,4.ea7 0c( mass one-fifth the Earth’s masc4g7 an0a .vr,d (ecuas. The gravitational acceleration at the surface of the planet is most nearly

参考答案:    

标记此题
15#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  08.38: Akg 1200 satellite orbits Planet X in a circular orbit with ) z j8tuq+djd/a constant speed of 5,000m/s. The radius of orbit is 7,500,000 m. What is the magnitude of the gravitational force e)z dd+jtu8 jq/xerted on the satellite by Planet X?

参考答案:    

标记此题
16#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  94.34: A hypothetical planet orbits a star with 5m l bfk rtpdh4;mc:14kr-1pvmass one-half the mass of our sun. The planet’s orbital radius is 1 rv 4m5:kbmk ;dp p-4c1lrhtfthe same as the Earth’s. Approximately how many Earth years does it take for the planet to complete one orbit?

参考答案:    

标记此题
17#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  97.12: Two artificial satellites, 1 and 2ah:vyfp5acmym0 9 q nmv+ v+:4, are put into circular orbit at the same altitude above Earth’s surface. The mass of satelli4 vf:vn:y+ mp0yavmamq 5h c+9te 2 is twice the mass of satellite 1. If the period of satellite 1 is T, what is the period of satellite 2?

参考答案:    

标记此题
18#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  15.22 Satellite 1 makes a circular orbit around the Earth with a radbdi-vee hf:w5gc93: d/pn5h lius $r_1= R$. Satellite 2 makes a circular orbit around the Earth with a radius $r_2= 2R$. We let v represent the speed of a satellite and a represent the magnitude of a satellite’s acceleration. Which one of the following choices gives the correct relation between the speeds and accelerations of the satellites?

参考答案:    

标记此题
19#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  98.33: In the following problem, the word “weight” refer8oca/c5f awo-s to the force a scale registers. Ifwo5f c/8aoa -c the Earth were to stop rotating, but not change shape,

参考答案:    

标记此题
20#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  10.42: A comet moves in an elliptical orbit around tw ; oyzv80zh zz4ic9s(he sun. As the comet moves from aphelion (the point on the orbit farthest from the sun) to perihelion (the p 0 y9os8w 4vcz(;zzzihoint on the orbit closest to the sun), which of the following results is true?


参考答案:    

标记此题
21#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  17.48: In the binary star system shown, the two g)z2s3n + aj+uy8grm . bi-cszstars follow circular orbits about the system’s center of mass. The stars are separated by a distance D that is large compared to their size andgym +8gus-2ianrj). zs bzc3+ are subject only to their mutual gravitational attraction. The orbital period of the star of mass M is T. Which one of the following choices represents the total mass of the binary star system?


参考答案:    

标记此题
22#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  06.50: A rocket is in a circular orbit with spiy(; ud tw-wa.eed vand orbital radius R around a heavy stationary mass. An external impulse is quickly applied to the rocket directly opposite to the velocity and the rocket’s speed is sloweda(-y d.ut w;wi to v/2, putting the rocket into an elliptical orbit. In terms of R, the size of the semi-major axis a of this new elliptical orbit is

参考答案:    

  • :
  • 总分:22分 及格:13.2分 时间:不限时
    未答题: 已答题:0 答错题:
    当前第 题,此次习题练习共有 22 道题
    本系统支持习题练习,作业与考试三大模式,作业考试自动评分,成绩排序一键导出,可设定动态变量同一试卷千人千题
    如果您对本系统感兴趣,想加入我们或者想进行任何形式的合作,请加微信 skysky1258

    浏览记录|手机版首页|使用帮助|题库网 (https://tiku.one)

    GMT+8, 2025-7-11 17:11 , Processed in 0.159302 second(s), 65 queries , Redis On.