1.选择题- (共4题)
阅读理解
Remember that goals are dreams with a timetable. Our goals are important for us to create what enriches our life. A very common attitude among people who are successful is that their success lies in their ability to provide themselves goals that are both numerous and exciting. When you think about your future,you are helping to feed a long-term goal of what you want to create.
To realize your dreams,you must translate your vision into a series of actions you can take as soon as possible. You should be able to measure these results,to make sure they take you wherever you want. And this step should not be viewed lightly! Indeed,very few people set goals and concrete actions for themselves to achieve. Very few people note what they want to accomplish,and know each day whether they have indeed advanced in the direction of their dreams.
Therefore one of the secrets that you can get results from is to write down your goals on paper first. When you give your dreams a form,they become more concrete,and you can refer to them often and easily. Whenever you read the dreams that you note down,you fill your mind with positive and motivational thoughts.
Unfortunately,many people stop there. They just simply make wishes, hope and wait. These people do not bring positive difference in their lives,because that sort of behavior is just wishful thinking. Success is not at all a miracle. It depends on clear and realistic targets through serious thoughts:concrete actions and perseverance(毅力). Don't forget,your past does not determine your future. Only you now is your potential!
根据短文内容,选择最佳答案,并将选定答案的字母标号填在题前括号内。
2.单选题- (共9题)
A. 半径越大,加速度越大 B. 半径越大,角速度越小
C. 半径越小,周期越大 D. 半径越小,线速度越小
A.![]() ![]() ![]() ![]() |

A.Q3为负电荷,且放于A左方 |
B.Q3为负电荷,且放于B右方 |
C.Q3为负电荷,且放于AB之间 |
D.Q3为正电荷,且放于B右方 |
A.![]() | B.![]() | C.![]() | D.![]() |

A. 两小球间库仑力不变
B. B球受到的推力F增大
C. 竖直墙面给A球的弹力不变
D. 水平地面给B球的弹力不变

A.随着电荷量的增大而增大 | B.与两电荷量的乘积成正比 |
C.随着电荷间距离的增大而减小 | D.与电荷间距离的平方成反比 |
A.300F( | B.1200F | C.900F | D.无法确定 |

A. 加速度始终增大 B. 加速度先增大后减小
C. 速度先增大后减小 D. 速度不变
3.多选题- (共2题)




A.![]() ![]() | B.![]() ![]() |
C.![]() ![]() | D.![]() ![]() |

A.q1、q2为异种电荷 |
B.圆轨道上的电场强度处处相同 |
C.圆轨道上的电势处处相等 |
D.点电荷q1对小球的静电力是吸引力 |
4.填空题- (共5题)


5.解答题- (共5题)


(1)画出左边小球的受力分析图;
(2)小球受绝缘细线拉力的大小;
(3)小球所带的电荷量。









(1)C球带何种电荷?电荷量多少?
(2)外力F的大小和方向如何?

求:(1)B带正电荷还是负电荷?
(2)B球带电量绝对值Q2为多少?
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【1】题量占比
选择题:(4道)
单选题:(9道)
多选题:(2道)
填空题:(5道)
解答题:(5道)
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【2】:难度分析
1星难题:0
2星难题:0
3星难题:0
4星难题:1
5星难题:0
6星难题:11
7星难题:0
8星难题:7
9星难题:2