A Competition Question That I'm Not Interested In
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"Teacher Lin!" When Chen Yu and Zhang Yi arrived at Lin Wei's office, Li Zhiwei, Zhang Qiang, and Wang Meng were already there.
"Okay, just find a place to sit. You still have classes later. To cut the long story short, tell me about your progress during the winter vacation. How are the two books I gave you going?
How did it feel to do the test questions?" Lin Wei nodded and told Chen Yu to find a place to sit.
"Li Zhiwei, tell me first!”Lin Wei looked at the four of them and finally chose Li Zhiwei.
"Teacher, can I say that I didn't read it?!”Li Zhiwei touched the back of his head and said awkwardly.
Chen Yu immediately couldn't help but purse his lips to stifle his laughter.
Zhang Yi, Zhang Qiang, and Wang Meng were not any better. They all pursed their lips and chuckled.
However, Zhang Qiang and Wang Meng didn't seem to dare to look up. Their heartbeats were also accelerating. Chen Yu estimated that these two people's conditions were similar to Li Zhiwei's.
"You didn't see it?" Lin Wei was stunned. He guessed that the progress might not be very good, but he did not expect this result.
He was instantly furious!
"Teacher, don't be angry. It's not that I don't want to read it, but I haven't finished the winter vacation homework that our teacher assigned! There were too many. There were more than 60 math papers, two exercise books, more than 80 English papers, and more than 20 Chinese papers. However, there were a lot of things to copy. There were also other subjects that filled my holiday life.”Li Zhiwei immediately complained.
Chen Yu understood. Although he had about 40 sets of Mathematics test papers, he didn't care about them at all. He would write them down whenever he was having sex with Liang Siyu.
Basically, this was equivalent to copying the answers. Chen Yu's speed was very fast because these questions were too easy for him.
As for the English test paper, Chen Yu basically chose it after looking at it. Aside from the essay, each test paper only took seven minutes at most.
Chen Yu didn't even bother to write his Chinese. There were too many of them. Chen Yu wanted to vomit from the repetitive work. What kind of concept was reciting and copying the text three times?
However, he still did the test.
Chen Yu's time spent on the other subjects was relatively shorter. However, no matter how much time he spent on the other subjects, the time he spent on the other subjects was always very short!
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" What about you guys? Didn't you see it either?!" Lin Wei asked as he looked at Chen Yu and the others in exasperation.
"Yes, I did. I felt that it was very difficult. I only read less than one-twentieth of it because I really couldn't watch it anymore. Firstly, it was too difficult. Secondly, I couldn't finish my homework!”Zhang Qiang quickly said.
"I read it too. I couldn't continue after reading about 30 pages. First, it was difficult. Second, I didn't have the time!”Wang Meng added.
"I read about sixty pages! Teacher, the questions for the physics competition were fine at the beginning, but the later parts were too complicated and difficult!
Just like this question:
A disk was rotated clockwise around the center O of the disk and a fixed horizontal axis was vertical to the disk surface at a uniform angular velocity of
Assuming that there were water droplets being thrown out from all over the edge of the disc, there was only one spot on the ceiling where there was water. Take the gravitational acceleration as g=9.80m/s2.
Beg:
(1)The height of the ceiling relative to the center axis of the disc;
(2)The coordinates of the spot on the ceiling where there was water.
I don't have any ideas to solve the problem at all!" As Zhang Yi spoke, he flipped through the book that he carried with him and pointed at the test questions.
Chen Yu, Zhang Qiang, and the others also came over to watch.
Chen Yu knew this question.
"Chen Yu, do you know how to solve this question?!”Lin Wei said dejectedly.
" Yes, there are actually two ways to solve this problem. The first way is to establish a planar rectangular coordinate system in the plane of the disc, with the center of the disc as the origin, the x-axis horizontally to the right, and the y-axis vertically upwards..."
Following which, Chen Yu explained his solution to the problem. While solving the problem, he picked up a pen and a piece of paper from the table and started writing.
In fact, no matter which method was used to solve the problem, it was more complicated.
After hesitating for a moment, Chen Yu finally decided to write down both solutions.
Lin Wei nodded as he read.
Clearly, he approved of Chen Yu's solution.
"The two solutions above have different starting points, but the processing methods are similar. The projectile motion must be decomposed into two sub-motions in the horizontal and vertical directions, and then the extreme value is solved through mathematical processing.
" However, the rotation axis of the wheel is fixed, so it's easy to determine that the water droplets thrown from the edge of the second quadrant of the wheel can reach a fixed point on the ceiling." Then, Lin Feng began to analyze the key points of the two solutions to this question for Zhang Qiang and the others.
Chen Yu discovered that a genius was indeed a genius. If it were an ordinary person, they would definitely be dumbfounded. However, Zhang Yi and the others were actually listening with relish. Chen Yu couldn't help but think that if they were pretending to know what they didn't know, then they really were natural actors!
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" Do you all understand?!" Lin Wei put down his pen and looked at Zhang Yi and the others. As for Chen Yu, he directly ignored him. This guy was really as monstrous as the rumors said.
It was already very impressive for an ordinary person to have a solution.
However, this guy directly gave two solutions, and they were basically the most standard solutions.
He now suspected that this guy had memorized the answer.
However, he felt that the possibility of that happening was extremely low.
It was almost impossible!
Who would be so bored as to use this thing? It wasn't even a word.
Physics was not Chinese. It was good for you to memorize Chinese, but forget about physics. It was not realistic at all.
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"Teacher, there are still some parts that I don't quite understand. For example, here ymax=(Omega r) 22g g2 Omega 2, ymax=(Omega r) 22g g2 Omega 2, how do you get this?!”Li Zhiwei shook his head and said.
" It's like this. Do you see this place?" As he spoke, Lin Wei drew a circle with a few formulas inside.
Then, he explained the formula.
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Meanwhile, Chen Yu was looking at this with a bored expression. It wasn't that he didn't want to give him face, but these things were simply too simple. It was like asking an outstanding high school student to solve a one-dimensional linear equation!
How could they be interested?
Lin Wei discreetly glanced at Chen Yu, memorizing Chen Yu's attitude, reaction, and behavior.
He decided to have a good chat with Chen Yu later. He wanted to see just how deep Chen Yu's knowledge of physics was!
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