At the same table, he is manic-depressed, and needs to be spoiled.

Jiang Jinyan looked at it for a few minutes, then picked up a pencil and began to draw auxiliary lines on the picture, "This is a question for the college entrance examination in Kyoto last year. Although the question is long, it also gives a lot of information. What I want to see the most, the most important thing is to grasp every information point in it, and don't be confused by words and numbers.

We can start with the conditions given in the topic... Also, you have already done the first small problem, you can find the magnetic induction intensity of I area and the movement time of electrons in the magnetic field of I area, and the electrons exit at point Q I think the second question is easier than the first question. "

Jiang Nuanxing knew this truth, "Well, the teacher also said that the kind of questions that only have a simple sentence are the most difficult, and the information given is too little, but I have read this question for a long time before I grasped it. The key point, if it is in the examination room, I guess it will be timed out.

As for the second sub-problem, I don't know where to start with the geometric direction? "

The little girl looked at the boy and began to write on the picture, "Look, it is known that as long as the electrons do not collide with the outer boundary of the magnetic field in the I region, they can exit from the exit area. When Eko = keU, it is necessary to ensure that the electrons exit from the exit area. Find the maximum value of k. At this time, to get the maximum value of k, the radius of the electron in the uniform circular motion must be the largest. This can only be done when the trajectory of the electron motion is tangent to the boundary of the region I. We can set this The radius is rm, and from this tangent geometric relationship, we can list the formula (V3R-rm)∧2=R∧2+rm∧2... Finally, the simultaneous equations can be solved, you can try it.”

Jiang Jinyan pushed the draft paper in front of Jiang Nuanxing, and the little girl took the pen, "My deskmate is amazing, so I can think of tangency, why didn't I think of it?"

"Let me do the math." The little girl began to sink her head into serious calculations. Jiang Jinyan saw that her soft, broken hair was a little messy, and wanted to help her pin it behind her ears, but the hand she just stretched out only touched her ears. Then he shrank back again, the little girl didn't notice that she was doing the question seriously, the boy stood up and planned to get some snacks for the little girl.

After a while, Jiang Nuanxing calculated the correct answer, and Jiang Jinyan came back with a box of chocolates, "At the same table, I figured it out, so happy, but I did it after you mentioned it—" The little girl pursed her lips, this was the gap between her and her deskmate.

"Well, it's good to be happy, but don't worry, maybe you don't need to tell me, you can think of it after a while." Jiang Jinyan believed her unconditionally, and Jiang Nuanxing smiled, "Your words at the same table are very useful. "

The young man's eyebrows were gentle, "Really? I'm very happy to make you happy. Do you want to eat chocolate?" The young man handed her a box of beautifully packaged chocolates.

Jiang Nuanxing was very embarrassed to accept it, "It seems that every time I come, you will give me chocolates. Are you responsible for feeding me fat?" Mom told her not to eat too much chocolate, but she just endured it. Can't live.

Jiang Jinyan helped her peel off the candy wrapper, and leaned closer to her, "Well, I'm in charge!"

The little girl's eyes were wide open, her heart was pounding, he said he was responsible for her, and she didn't want to be moved, but he smiled at her and said such seductive words.

"Oh, then... what kind of responsibility is it? Are you fat with me?" The little girl didn't dare to look at him, she lowered her head and pinched her fingers, but the warm breath sprayed by the boy was all around her ears, and she couldn't ignore it at all .

Jiang Jinyan looked deeply at the little girl he was thinking of, tsk, is the little girl deliberately misinterpreting his meaning?

After all, he stretched out his hand and helped her pin the broken hair behind her ears. He spoke in a gentle voice, with a hint of hook in the lingering tone, "Jiang Nuanxing, what kind of responsibility do you want?" Apart from marrying her, he Can't think of any other way to be responsible.

Jiang Nuanxing looked at her nose, nose, and heart, and her breathing was a little disordered. She mustered up her courage and looked at him sideways. The boy's handsome face came into view, and her small figure was reflected in her phoenix eyes. From her perspective, it was okay. He saw the suet-like white skin under the collar of his slightly unbuttoned shirt.

!!!

She didn't want to be shy, but the tablemate was too pretty and delicious.

If the tablemate knew that she was greedy for his body, it would be a disaster, but at this moment, Qianqian reminded her that the tablemate should catch up with him as soon as possible, otherwise he would be snatched away by other school girls, Jiang Nuanxing felt in his heart I am struggling fiercely, so is this atmosphere suitable for expressing my heart?Or, take it easy?
Try again to see if the deskmate also likes her, and it's not too late to confess?

The little girl forced herself to look away from his collar, and turned to his face. She pulled the hem of La Jiang Jinyan's clothes with her thin white fingertips, and the boy was shocked. If you don't have the courage to confess, then you should also tell another thing that you have thought about for a long time, just treat it as self-willed, no matter whether the deskmate agrees or not, she will not be angry, the little girl's head is hot, Wu Nong softly said She said, "At the same table, this is what you said. The way I want to be responsible is... I want you to accompany me to take the college entrance examination."

She wanted to ask him, if he really got the recommendation quota, could he continue to attend classes with her, encourage her the day before the college entrance examination, so that she could see him every day in the future!

"At the same table, am I being selfish? Even though I know that you have a great chance of getting a recommended admission spot, I still ask you to continue teaching in the classroom with me." The little girl grasped Jiang Jinyan's hand subconsciously, and he would agree ?

Jiang Jinyan was taken aback for a moment, he didn't expect that the little girl's way of being responsible was just this?This silly girl, he originally planned to attend classes with her until the end of the college entrance examination. Even if he got the recommendation quota, he would give up the recommendation and choose to take the college entrance examination to go to the same university as her. Go to the same school as her.

Seeing that the young man didn't speak, Jiang Nuanxing was a little flustered, "At the same table, I didn't mean to let you give up the recommendation, I just thought, after you get the quota, can you choose to continue to come to the school to attend classes?" In that way, she can also see you every day to him.

Jiang Jinyan looked at the little girl's worried look, and bursts of deep chuckles escaped from his throat, "Silly girl, I never wanted to go to college through recommendation from the beginning, the first aspect of participating in this competition is that I find it interesting, The second is to train myself, even if I get the recommendation quota, I will give up, because I prefer to take the college entrance examination with you to get an identical university admission letter, so you don't have to worry about this."

He said that he was more inclined to get the same university admission letter as her!
Jiang Nuanxing raised her head, and looked at the young man with deer-like clear eyes, "At the same table, do you know that your words can easily make people's hearts flutter—"