Chapter 229: back to the start

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Exams are always relative.
From the perspective of different people, the same paper is very different.
For example, Li Zheng, after doing the first two mechanics questions, the biggest feeling is that this is a "calculus competition for middle school students."
This is no way, because the mechanics problem is too classic, and it is difficult to make breakthroughs in concepts and thinking, so I have to do things in mathematics.
In Shi Yang's eyes, it was another world.
First of all, it has been 20 minutes since he started the exam. He hasn't read the second question yet.
Because of the first question, "putting a tea cup on the table", he really couldn't figure out--
[In order to make the tea cup contain as much tea as possible and keep it stable enough, what is the optimal height of the tea in the cup? 】
What the is Nima asking?
What is as much as possible and remains stable enough?
Is physics wording so rigorous?
Should we try to solve the problem by chemical methods?
Filled up and frozen into ice dumplings? =+-?֏?
It's no wonder that Shi Yang burst out with these wonderful ideas.
The main problem is the grandson of the person who caused the problem.
In fact, this question asks, "make the tea cup the lowest center of gravity, what is the height of the tea in the cup." 】
If you ask this question, Shi Yang still has a chance.
However, if the description is
as much as possible and stable enough
, people who do not have enough preparations for competition may not understand it.
So, after more than 20 minutes, Shi Yang had to look to the second villain cart.
Haha I will.
Shi Yang thought so.
He did list a lot of mechanics formulas very quickly, ready to show his strength.
But soon, he was baptized by the force analysis and collision analysis of the flat car.
It’s like someone asking you, can you walk?
Of course you will.
Then the man transformed into an old physics contestant, with a smile on his face.
"Yes? It's easy to handle."
"Let your weight be M, your calf length L1, thigh length L2, step length L3..."
"Please calculate--"
"1: The maximum pressure on your knee and ankle joints for each step you take."
"2: The maximum angle between the two thighs for each step."
"3: Your left foot suddenly slammed, causing the left foot to touch the ground and the pressure to become 1/5 of the normal state. In this case, please recalculate the first two questions."
If something like this happened on the street.
This old questioner should be beaten.
Unfortunately, this is the examination room.
Shi Yang, even the king of chemical competition, faced such a situation, but was only sighed with hope.
Of course, it is not just Shi Yang who is sighing at this moment.
Even if it is an old competition, in the face of this terrifying second question, most of them will be at a loss.
This kind of question, it feels like to raise the bar, because the paper is simple, you must add a question that no one can solve.
And even if you can solve it, this calculation is enough for you to do for half an hour.
Therefore, Li Zheng took some thoughts to calculate the second question, which was already regarded as an extreme problem in the eyes of most people. After writing a few formulas and ideas, he gave up and went to the third question.
This third question, the opening question is very dazzling-
[The simplified model of an electromagnetic rail gun is shown in the figure...]
Seeing this, half of the people thought of "Sister Gun", and the other half thought of "the seat".
Some people think of both.
This group of people, because they think too much, disturb the thinking of the exam very often, and usually die very badly.
If you study this electromagnetic cannon seriously, you will find that it is very similar to the 32nd rematch question. For those who have thoroughly understood the real questions of previous years, it is equivalent to giving points.
Those who haven’t done it, study the super-electromagnetic cannons.
The fourth question is a vibration question, the difficulty is slightly reduced, but it is a brand new question, there is no template, and it is a kind of problem that can be done with a solid foundation.
The fifth question, the optical question, is probably the simplest question in the whole volume.
But calculus is still required, and the optical problem must be a mathematical geometry problem.
Those who can do this will probably have some understanding.
Although there is still controversy in physics and mathematics.
But the person who made the question has an unusually clear attitude:
Mathematics is a dad, don't go home without calculus.
The sixth question, the topic of relativity, discusses the large number of pi mesons flying in cosmic rays.
Real old contestants, seeing this kind of thing, don't panic at all.
According to experience, things that look particularly deep and very mysterious often have a very quizzical content, so if you understand it, it is actually very good.
Such a thing as a villain cart is the most terrifying.
Finally, the seventh question, the last question.
Not to mention, just seeing the score of 70 points is enough for people to eat a pot.
This set of theoretical papers has a perfect score of only 320, and it occupies almost 1/4 of this question.
You have to do it seriously.
That's what it says, but most people will soon be unable to continue to be serious.
Because the title of this question occupies a whole volume.
There is no segmentation, and even commas are few, densely packed with words and symbols.
Not to mention the physics test, even if it is put into the language test, it is considered to be the top reading question.
If you count carefully, you will find that this inscription is almost 2000 words.
It is longer than a chapter by some web authors.
There is no doubt that before this question becomes a physics question, it is first a reading comprehension question.
Those with a language score of 120 or less will be eliminated!
When Shi Yang was here, his eyes were dull and he was screaming.
Only the meticulously thoughtful, physics-based dual-subject dominance, and excellent endurance, even if the author does not segment, even without a comma can read the brave warriors, it is possible to spy on one or two.
And Li Zheng, self-confidence is such a person.
About two full hours, he killed this final question—
[Lightning is one of the most magnificent natural landscapes on earth...]
(Be prepared to start myself~)
[Gamma Ray Storm... Lightning Cloud Discharge... Small Ice Crystals... Cloud Lightning]
(Did you understand? Brother? I don’t know how to read it.)
[Using... to measure the electric field in a cylindrical airspace lightning cloud...0.15MV/m......]
[The radius is 2.5km and the height is 1.0km. Find the potential difference, the total amount of positive charge and the carried
Total power...】
[Known vacuum dielectric constant ε=……]
(Come on, you can do it)
[In the process of power-up, the charge on the upper and lower ends of the lightning cloud will increase exponentially with time...]
[When the surface electric field is greater than 1.0kV/m, cloud-ground lightning will occur...]
[The lightning cloud slowly moves down from high altitude until it...]
[Try to estimate the strength of the surface electric field generated directly below this lightning cloud. 】
(One said, there is really no plan for you to understand, even if you understand, but only you think you understand, in fact, you don’t understand, even if you really understand, rest assured, you can’t do it. .)
When reading this, even Li Zheng collapsed.
The scary thing is that this is only 1/3 of this question.
Li Zheng tried to glance at the back five questions.
He seemed to see the strange words "spherical lightning", "ionosphere", "halo expansion", "microwave cavitation".
There is a feeling of reading science fiction.
The problem is that in science fiction, there are usually scientists to do this, and readers are not bothered.
And this time, sorry, you are a scientist.
Are you awesome, don't you like physics, your ideal is not to create the future of humanity?
Come, the calculator is for you, you come.
When most people read this question, they have a broken dream.
Li Zheng, the hand holding the pen, could not help shaking, and the sweat on his forehead grew more and more between repeated readings.
Even if the physical score is close to 350.
Even though he has done all the physics problems in the world.
But at this time, he had the feeling of being abused by the question for the first time.
It's the kind of feeling that you know every word but don't know what the title is saying.
That's the kind of suspicion that comes out of "who am I", "where am I", "what am I doing", and "what did I say".
It's the feeling of being crushed by cross-dimensions and even struggling to struggle.
This feeling, Li Zheng has almost forgotten.
But at this time, it is back.
The feeling of being abused is back.
As the saying goes--
When the returned, he found that the villain's cart was actually misunderstood by Li Zheng.
With one order, one hundred thousand demon questions came!
For Li Zheng, the feeling at this time is like being crushed by the mountain of Taishan.
Despair, powerlessness, collapse.
but.
Not dead yet.
Although he was pressed into the ground, his waist was straight.
Hold on, just go back.
Here comes the exciting super puzzle, finally here!
Li Zheng felt that every pore on his body was open.
Magic, his eyes swayed again.
Question return?
You have more trouble with TM!
Fuck you.
...
Another examination room.
Lin Yuejing also fell into a bitter battle.
There are not many problems that can make her into a hard fight.
This is one thing.
Unlike Li Zheng's positive stiffness, she chose to rewrite the title herself.
Simplify those descriptions that resemble papers into clear steps and condensed language.
Dismantle a super puzzle into several common problems and divide them.
But she soon discovered that she couldn't do it.
The title cannot be concentrated and cannot be disassembled.
This question seems to have a lot of redundant descriptions, but in the real core, one word cannot be extracted, and it cannot be simplified into a simple problem at all.
It is understanding, and this question tests understanding.
When an unfamiliar breakthrough paper is before you.
Can you understand, how long will it take to understand.
In other words, this question is basically on-site learning, and the test is learning ability.
Give you a new set of theoretical knowledge, learn on the spot, and solve problems on the spot.
Thinking of this step, Lin Yuejing's pen stopped.
Like Li Zheng, she seems to have returned to the original point.
It was the second grade of elementary school, and I was at a loss when I first saw the function of high school.
That was the first time in junior high school, the first time he knew the Schrödinger equation, he was amazed.
It was the summer vacation of the first year of high school. The first time I read the Nobel Prize in Physics, I was shocked.
At this moment, she put away her arrogance.
Returned to the original, girl craving knowledge.
...
About half an hour later, Shi Yang finally began to read this question.
Unlike the first two, his heart is surprisingly pure, only a few words-
When it comes to the question, I'm Nyima!
There is no doubt that this is also the voice of most people, both men and women.
In the examination room, the three invigilator teachers also understood the candidates who looked like a roller coaster.
They have also read the paper and naturally know the difficulty of the topic.
In the New Year, hitting a difficult problem is not a bad thing.
This rematch will inevitably widen the gap, with sharper points and more ordinary ones.
A male teacher said with a chuckle: "I can probably think of the scene at the time of the paper."
"The two questions 2 and 7 are really difficult..." the female teacher sighed. "The second question is a lot of calculation, and it takes 20 minutes to calculate it. The seventh question is 20 minutes after reading it. It’s hard to understand..."
"The second question is really a bit boring." Teacher Sun Xiubin of the low-end version shook his head. "I'm afraid that everyone will score higher, so I will increase the amount of calculation and the level of the person who has the question is limited."
"Is the seventh question a level?" The male teacher also snorted. "Whether to test Chinese or physics?"
"Yes, that's right." The female teacher said, "A whole page is a topic, it's a waste of time."
"Sun Xiubin" lifted his glasses, calming himself.
"I do not think so."
"The seventh question is really a test of learning ability."
"You know, there are often no textbooks for postgraduate and doctoral studies."
"The latest published papers, the most obscure academic articles, are your textbooks."
"Top papers usually require several people to collaborate and nibble together for a month to master one or two."
"This is the lack of learning ability, the gap between the problem-solving machine and the academic strongman."
"And this question tests this ability."
"It can be said that this topic is just a small paper, a small academic achievement."
"Who can finish the enlightenment within the stipulated time, who can get the 70 points, who is the one to be selected in the physics competition."
"For this question, it is completely testing your own thinking strength and understanding ability. No matter how much training you take, no matter how many famous teachers give you any effect," he said.
"It's the kind of self-taught student who has the advantage."
The two teachers, one man and one woman, nodded and heard, and if they were true or false, they would believe it.
"It is indeed Teacher Sun, who looks deeper than us."
"I'm about to forget that such an exam is to select academic talents."
"Sun Xiubin" only raised his hand and smiled.
"Of course, this question also has its problems."
"It should appear in the finals more."
"This question is in the semi-finals. I'm afraid the students can't stand it."
His voice just fell.
Shi Yang suddenly raised his hand, anxious.
Unlike Li Zheng.
Every time he raises his hand, he really wants to do that.
In some ways, he, like Li Zheng and Lin Yuejing, seems to have returned to the original point.
The origin where the was scared by the puzzle.
...
At 12 o'clock, the bell rang.
No one in the whole Jijing rematch examination room submitted in advance.
This is Li Zheng, the seventh question written only three minutes ago.
And there is no guarantee.
"Sun Xiubin" and others finished the papers and announced the moment when the exam ended.
A wailing wailing sounded throughout the classroom.
"Fuck!"
"It was sad last year, why is TMD harder today?"
"What is the B thing in the seventh question!"
"The third question is about electromagnetic guns. My mother is full of academy city, and my heart is all messed up."
"The second question is abnormal, has anyone solved it?"
"Preparing for three years, it's really a day trip..."
"It's over, it's over, it's all over..."
It is different from the girls who failed in the chemical competition.
The boy did not cry.
Either scold or daze.
Only Li Zheng and the long-haired monster, Shi Yang, who watched the trio in succession, were fairly stable.
Shi Yang's stability is mainly due to emptying his stomach and lack of energy.
Secondly, he originally came for a day trip, and there was no pressure or expectation.
He just turned around and lay on his side on the table, and said to Li Zheng across the long hair monster: "Is it cool, Zheng..."
Before Shi Yang finished his speech, he sat still again.
Judging from his appearance, his brother Zheng is absolutely cool.
The school uniform was taken off sometime, and the sleeves of the shirt could not help but reach the shoulders.
My hair was all wet together, like playing a football match.
The face is also a sucked expression.
"It's cool..." Li Zheng raised his arm, and his hands are shaking now, "This question is strong enough."
"Well..." Shi Yang swallowed and said, "It's all done to you... this question is really okay. In this way, I have done half the work out anyway, but I still have a chance to get a dragon ball Is that right?"
"Don't beep..." Li Zheng trembled and said, "I went to Lin Yujing for dinner."
"Bring one brother." Shi Yang rubbed his stomach. "My stomach is empty and I have no fighting power."
"Where to eat when you are empty," Li Zheng scolded.
"Don't buddy, I really want to take part in the topic, and I will never say anything about you and other girls."
"Shut up!" Li Zheng turned his head. "Well, now tell me the answers to the second and seventh questions. If you are reliable, it will be yours."
"Huh, what you asked is indeed accurate." Shi Yang laughed, "The two questions I didn't write a word."
"There is still a face to say." Li Zheng felt abandoned and waved his hand. "Go back and review the chemical competition. Not everyone can go to the question. Anyway, make some clues about the seventh question."
"Seventh question..." The long-haired monster who had been watching movies in the middle suddenly remembered something, thoughtfully, "I remember, the volume of the helium balloon.........380m3?"
Li Zheng glared: "You talking nonsense? My result is 1900m3."
"Hah..." The long-haired monster rubbed the back of the head silly. "You should be wrong."
"?????" Li Zheng's eyes widened even more.
Should I be wrong?
Young man, for so long.
Only, one person, dare to speak to me like this.
Just when he was about to say something, the hairy monster suddenly punched his fist: "I know, you should have calculated the density at 12 kilometers from the ground, shouldn't it be 1.53?"
"?!" Li Zheng's eyes could be even bigger.
"Really..." The long-haired monster laughed with his fingers shaking. "Think carefully, when you count ln, is it sloppy?"
Li Zheng was so shocked that he grabbed the scratch paper and examined it.
quickly.
"Ah!!!" Li Zheng hugged his head angrily, "How stupid!"
"Don't worry, don't worry..." The long-haired monster waved his hands to appease. "Did it mean that the very fierce teacher just reminded that there was still 10 minutes to wind up, disrupting your rhythm?"
"..." Li Zhengmumu turned his head, his eyes could no longer be glared bigger.
This force, obviously 80% of the time in the audience is in a daze, not even mentioned a few times...
Thinking of this, Li Zheng was nervous.
Is it... this is mental arithmetic? !
This complexity...so many calculus...
Surely the math champions may not be able to do it?
This force, so young, looks like a junior high school student...
How is it possible to compete for the championship...
Thinking of this, Li Zheng's scalp gradually became numb, and the words began to be spoken word by word: "You... called... what... what..."
The long-haired monster smiled and extended his right hand: "Go to see the wind. Yes, that is the return, the see, and the wind."