228 Learning is very bad(2/2)
The hairy monster next to him remained motionless, and the book was still on that page.
Shi Yang couldn't see it, so he stepped forward and patted it: "Brother, stop looking, it's too late."
The man didn't move at all.
After waiting, an invigilator whose appearance and temperament resembled Sun Xiubin also felt that something was wrong and walked over quickly.
Halfway through, the long-haired monster suddenly raised its head, stared wide-eyed and took a deep breath.
Then, he stared on the spot and started breathing heavily.
Everyone around was shocked.
The invigilator, the "low-end version of Sun Xiubin" was so frightened that he stopped in his tracks: "Classmate, do you need help?"
"No...it's okay..." The long-haired monster gasped and shook his head.
This voice is young and thin, and actually doesn't sound like a boy's.
It was only then that Li Zheng saw that he didn't even look like a boy. He was too fair and delicate, with a slender face, but his eyes were big and watery, and his eyes were full of innocence.
Not only looks like a girl, but also looks like a child...
He is indeed a very ignorant guy.
Shi Yang, who was opposite him, also looked at it for a long time, and became shy as he looked at it.
He was not afraid of dealing with boys, but when he saw such a handsome and immature boy, he panicked.
At this time, "Sun Xiubin" had walked up to the long-haired monster and asked with concern: "Are you okay? You don't look good."
"Ah... it should be..." The long-haired monster was also eloquent. He wiped his mouth in a hurry and gradually became incoherent, "Even if... it's okay... um... it should be..."
Li Zheng has seen a lot of this kind of shyness and temporary aphasia and understands the situation very well.
"Did you have a nightmare when you fell asleep?" Li Zheng asked with a smile.
"Ah... yes, I have a nightmare..." The long-haired monster responded quickly, glanced at Li Zheng gratefully, then grabbed the book, stood up on the table and said, "I have slept for too long... Is it time to hand in the book?"
It’s time?”
Everyone around him laughed, but there was no harm in it.
It's amazing that such a big guy can make it to the semi-finals.
"Hey..." "Sun Xiubin" helplessly pointed to the cabinet at the back of the classroom, "Put all the stuff that has nothing to do with the exam there."
"Well, I'm sorry, teacher..."
"Sun Xiubin" said seriously: "Don't be sorry for me, it's not my exam. I hope you can correct your attitude and be worthy of yourself."
"..." The long-haired monster turned around with a red face, just in time to see Li Zheng's smiling face. He also stuck out his tongue, smiled, and then quickly slipped to the back of the classroom.
"Sun Xiubin" shook his head helplessly, then returned to the blackboard and wrote the exam notes and time schedule on the blackboard one by one.
The long-haired monster quickly came back and sat down, wiped his sweat as if he had survived a disaster, covered his face and smiled softly at Li Zheng: "Thank you."
"Nothing to talk about." Li Zheng waved his hand and smiled.
Unexpectedly, this hairy monster is quite easy to deal with.
It's just a bit too casual, I haven't read through the basic textbooks, I don't have a calculator, and I dozed off.
But on the other hand, if you can enter the semi-finals casually like this, you can be considered a talented person.
Li Zheng then picked up the calculator and shook it: "The semi-finals require a lot of calculations, so you should bring a calculator."
"Ah, really?"
"Well, it can save a lot of time." Li Zheng pursed his lips at the podium, "If you're embarrassed, I'll raise your hand for you. Every examination room should have several spare calculators."
The long-haired monster waved his hands repeatedly, and his face turned red again: "It's okay, it's okay... No need..."
"The exam is very important, why are you so shy?" Li Zheng leaned forward and handed over his calculator, "You can use mine, I'll go get it."
"No!" The long-haired monster was so frightened that he hugged the table and rubbed it to the side. "There's really no need... I can do mental arithmetic."
"Huh?" Li Zheng was dumbfounded, "This is a rematch of a physical competition, mental arithmetic?"
"It's okay, I calculated quickly." The long-haired monster scratched his head, pushed Li Zheng's hand and said, "Thank you."
"Hey." Li Zheng had no choice but to shake his head and take back the calculator, "Looking at you, you should be in the first year of high school, right? It doesn't matter if you fail this time. Learn a lesson and remember to prepare well next year."
The long-haired monster was stunned for a moment when he heard the words, then he covered his face with a smile and nodded stupidly: "Okay, okay, I understand."
"Damn..." Li Zheng felt very uncomfortable, "Can you please stop using 'la' at the end..."
The long-haired monster turned around and asked stupidly: "What's the matter?"
"Forget it...as long as you are happy..."
"Forget it then." The long-haired monster laughed again.
"It's enough……"
The voice of "Sun Xiubin" suddenly came: "You two haven't talked enough?"
The two of them quickly silenced themselves.
Sun Xiubin then clicked on the blackboard and said, "I would like to reiterate one last time. The exam time is from 9 to 12 o'clock, and the total score is 320 points. When the bell rings, whoever writes another word will be punished as a violation."
Everyone just stared and listened, not daring to speak.
After everything was arranged, the bell rang and the test papers were handed out.
Li Zheng has been on the battlefield for a long time. When he got the paper, he no longer felt as excited as before.
There is only one word all over my body——
stable.
Don't think too much about things like grades.
If possible, try not to think about Lin Yujing's answering situation. This is very difficult, so we can only try our best.
Just like you usually do questions, just go through them one by one like water.
Li Zheng then swept towards the first question.
As expected of the semi-finals, the first question became more difficult.
It's about a station wagon with a small round table.
There are three poles at the bottom of the small round table for support, like a camera tripod.
Then now, in the center of the table, there is a cup of tea.
In order to make the tea water as large as possible and be stable, how high should it be installed?
This is a very common process in life, and it is probably enough.
But if we discuss it from a physical perspective, it is a long and complicated calculation process.
In the simplest terms, the center of gravity of the water glass should be as low as possible.
After determining this goal.
This question has nothing to do with physics.
Moved into the fields of analytic geometry and calculus.
Take another extreme.
Connect the equations.
Remove negative solutions.
Now, wouldn’t the answer come out just by doing some calculations?——
h=m/pπ2[{(1+4π/5·pr2h/m)^1/2}-1]
It's concise and clear, with basically no calculations, just for getting started.
The second question is about a little man pushing a cart.
However, this time it is an agricultural flatbed truck, the kind with two wheels, two poles and a large flatbed.
It's just that when you do the calculations, you need calculus or something.
There are also some simple torque, rigid body mechanics, and energy conservation problems.
Just pay a little more attention to a bunch of two-dimensional collision problems.
After you break this all down.
What is left in front of me is still a mathematical geometry problem.
The Physical Competition lives up to its reputation, and it is indeed a calculus competition for middle school students.
After Li Zheng wrote down the extremely long answer, he immediately looked at the table next to him.
The long-haired monster was staring at the paper in a daze, his eyes so cute.
Alas, you are still too young.
Chapter completed!