A conventional change process should be like this: the copper rod falls in a magnetic field, and gravity causes it to fall faster and faster, but because it moves in a magnetic field, it cuts the magnetic field lines to generate an electromotive force. The presence of a closed loop will also cause an electric current to be generated in the copper rod, and the flow of current will in turn cause the copper rod to be subjected to the magnetic force of Loren......

If you ignore the existence of the wind, Meng Wentian will soon be able to make this problem, isn't it just using a few formulas?

First, the weight of the copper rod is calculated according to the diameter and density of the copper rod given by the known conditions, the resistance of the copper rod is found according to the resistivity, then the equation of motion of the copper rod is listed according to the acceleration formula, and then the electromotive force and the magnitude of the current are found according to the strength of the magnetic field, and then the direction and magnitude of the magnetic force of Loren are found according to the left-handed law.

Except for the process being a little more complicated and the formula being a little bit more used, this problem is basically a classic high school physics problem.

What made Meng Wentian laugh and cry was that if the wind speed given in the title was followed, Nima's copper rod would be blown away by the wind! It would not fall into the magnetic field at all, let alone pass through the lowest point.

The copper rods have been blown away, how can this Tama answer the question in the question?

Meng Wentian instinctively felt that the wind speed given in the question was added to the question's teacher's drawing.

He looked at the question, hesitating whether to answer the question according to the usual routine of the physics teacher's class, ignoring the hateful wind. However, Meng Wentian felt that he could take advantage of this flaw to do something.

Of course, Meng Wentian will not use wind power to answer this question. Although he could have used his self-taught undergraduate knowledge of fluid mechanics to find out how much force the copper rod was subjected to, and thus the maximum velocity of the copper rod under the combined action of wind and gravity.

If he does this, he is pretending to be 1, and he is pretending to be 1 force. The teacher will definitely not give him a mark when he marks the paper, after all, the answer he asks for will definitely not match the standard answer.

But he didn't want to honestly make "standard answers" and become a good student in the eyes of teachers.

After a moment's thought, he wrote in the blank space of the question: "The known conditions of this question are incorrect, and the copper rod cannot pass through the lowest point of the magnetic field. ”

He did not hand in the exam papers quickly, but sat in his seat and silently practiced the "Awakening Brain Formula", using the "Honghuang Gu Sanskrit Sutra".

Next, they took the English test.

In this English test, Meng Wentian was even more unfazed and completed the test paper without hindrance.

After school, Meng Wentian was not in a hurry to rent back the house, but played basketball with Lin Bo, Liu Jingting, Song Xiaojun, Ma Liandao, He Jiajun, and Ren Ziqiang in the school playground, and after having fun, they ate barbecue and drank beer at the roadside stall next to the school. Because they all had to study late on their own, Meng Wentian restricted each of them to drink a maximum of one bottle, and several people felt unhappy, but under Meng Wentian's high pressure, they only dared to drink one bottle if they were unhappy.

"Went to pretend to be forced again?" After taking a shower and changing clothes in the rented room, as soon as she entered Yao Xiaoyan's rented room, Wang Ruxue raised her head from the computer and asked Meng Wentian sarcastically.

Meng Wentian said depressedly: "Teacher Wang, how come I was in a very depressed mood as soon as I met you. Can't you just make people happy a little bit and make people like you a little bit?"

Wang Ruxue said angrily: "What's wrong with me?...... I think I'm doing a good job, but you don't know how to appreciate it. If I'm the kind of woman who likes to please men, would you still be blessed to flirt with a girl in her twenties?"

Meng Wentian was dizzy for a while, and said bitterly: "Why are you here again? I really obeyed you." Could it be that the girl in her twenties is so valued by you......? I'd rather you weren't a yellow flower girl......"

"Wow-" Wang Ruxue looked shocked and said in surprise, "Meng Wentian, I didn't expect your taste to be so heavy. I dare you don't like me because I haven't been by other men?...... Seriously, you really don't care?"

Meng Wentian was stunned for a moment, and blurted out, "You...... What do you mean?"

Wang Ruxue said: "If I have been by a man, you like me, right?"

Meng Wentian was anxious, and immediately said, "How is it possible? I'm stupid, I'm stupid." Speaking of which, he hurriedly asked, "You have been ...... Wouldn't you? yes, or why your personality is so quirky. …… , you're not my girlfriend anyway, I'll care ...... you"

"Hahaha......" Wang Ruxue laughed and said, "I know that you guy's duplicitous." Your face turned white just now. It seems that you still care about me, and you still hope that I haven't been done that. It's not a hope, it's a strong desire, okay, I know, I'll be there for you until you marry me......"

Meng Wentian really couldn't deal with this woman, so he had to come up with one last trick: "Teacher Wang, I don't understand a question in this paper. I strongly disagree with the author's hacking method, and I agree that he makes the problem too complicated. Have you read this paper?"

Sure enough, Wang Ruxue became excited: "Where? Which paper? Do you want me to explain it? Quick, quick, show me this paper." ”

Meng Wentian discussed with Wang Ruxue here for two hours, and then he went home, back to his home. He believed that it was so late that his father, who worked at the police station, should go back.

He guessed right.

When he came home, he saw his father drinking tea and watching a TV series. Meng Wentian sat down next to his father, watching TV series with his father, chatting about the police station, the provincial electric city, or the school under his father's questioning......

Early the next morning, his father went to work at the police station, and Meng Wentian returned to Yao Xiaoyan's rented house and continued to study computer matters with Wang Ruxue, so Yao Xiaoyan naturally went to school.

Time flowed unconsciously, until it was almost time to eat lunch, Wang Ruxue, who occasionally looked at the time under the laptop screen, suddenly exclaimed, and then hurriedly got up, saying that she went to the vegetable market to buy vegetables, and she had to cook lunch for Yao Xiaoyan today.

Meng Wentian was very surprised, and asked in disbelief: "You buy vegetables and cook, do you really want to cook for Yao Xiaoyan......?" But does she dare to eat it?"

Wang Ruxue was furious, kicked Meng Wentian and hurried out of the door.

Because this place is not far from the vegetable market, a few minutes later, she carried two plastic bags home and instructed Meng Wentian: "Immediately choose vegetables for me, wash the vegetables, I will make back to the pot meat first, she likes to eat this." ”

Meng Wentian had an expression of disbelief and asked, "Do you still cook such a complicated dish?" Do you know the steps to make back to the pot?"

However, suspicion is suspicion, and he quickly squatted in the kitchen and began to choose vegetables seriously.

Meng Wentian's cooking skills are not very good, but he has watched his parents cook since he was a child, and he also likes to help out on the side, plus he also cooked when he opened an auto repair shop in his previous life, so it is absolutely no problem to choose dishes, and his hands and feet are very fast.

In addition to helping Wang Ruxue choose vegetables, Meng Wentian also freed his hands from time to time to shave ginger and garlic for her, which made Wang Ruxue also very surprised, I didn't expect this kid to be so capable.

The two worked together, and the speed of cooking and stir-frying was really fast, because due to the lack of liquefied gas firepower, the two still had time to take a break, and chatted a few words on the way of stir-frying from time to time, which was very pleasant.

"Hey——, why is it so fragrant? Which restaurant did you order a boxed lunch?" When Yao Xiaoyan came in, she was taken aback by the smell of vegetables wafting from the kitchen.

Wang Ruxue pretended to be very forced and said to her: "Wash your hands quickly, and you will eat immediately." ”

Looking at the fragrant dishes, Yao Xiaoyan looked at Wang Ruxue in surprise and asked, "Teacher Wang, did you cook this dish?" yes, we said last night that we would cook and eat our own food today, so that this guy could ......."

Wang Ruxue was so anxious that she shouted: "Yao Xiaoyan!"

Yao Xiaoyan found that she had missed her mouth, and smiled at Wang Ruxue embarrassedly, but then looked at the dish suspiciously, looked at them left and right, and asked, "Who cooked this dish......?" You're still your ......"

Wang Ruxue slapped her palm on the table, raised her eyes and raised her eyebrows and asked, "Little girl, why am I not me?" Do you think I was born a dominatrix? Hmph, it's not me who brags and cooks, whose skills can surpass me?"

In addition to being fierce, this guy also has a characteristic of giving her a little sunshine, and her face is full of smug smiles when she is praised for her good cooking.

Meng Wentian felt that she was like a little girl, and her heart moved inexplicably.

The current Yao Xiaoyan was not afraid of her at all, covered her mouth and nodded with a smile: "This is what you said, we didn't say that you are a dominatrix." ”

Meng Wentian said with a smile: "Teacher Wang, this is labeling himself himself." …… I've heard that the person who knows a person best is himself, what does that mean? Mr. Wang......

Wang Ruxue rushed to Meng Wentian in a few steps, twisted Meng Wentian's ear, and asked sharply: "There is another sentence you haven't heard, the one who knows yourself best is your enemy? You are my enemy!"

All three laughed, picked up their chopsticks and began to eat.

The taste of the dish may not be really good, but the three of them are very happy to eat, and they feel that they have never eaten such a good dish.

When she was having a good meal, Yao Xiaoyan asked Meng Wentian, "Did Teacher Ma Qingquan call you?"

Meng Wentian shook his head and said suspiciously, "No." …… Why did he call me?"

Yao Xiaoyan said, "What's the matter? It's not that you gave him a very big surprise. ”

Meng Wentian was stunned for a moment and asked, "What surprise did I give him?"

Yao Xiaoyan said: "It was yesterday's spot check exam, which was an event held by the Provincial Education and Science Bureau. Your grades are very good, and the results of our class have also come up, saving face for our school, and the principal has praised him. Do you say he's happy? And you're the hero of this exam, of course he's going to have to call you. …… , he really didn't fight?"