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229 Back to the origin(1/3)

Exams are always relative.

The same paper, viewed from different people's perspectives, has vastly different feelings.

For example, Li Zheng, after completing the first two mechanics questions, his biggest feeling was that this was a "calculus competition for middle school students".

There is nothing we can do about it, because mechanics problems are too classic, and it is difficult to make breakthroughs in concepts and thinking, so we have to do things in mathematics.

But in Shi Yang's eyes, it was a completely different world.

First of all, it’s been 20 minutes since the exam started, and he hasn’t read the second question yet.

Just because of the first question "Placing teacups on the table", he really couldn't understand it——

[In order to make the tea cup hold as much tea as possible and keep it stable enough, what is the optimal height of the tea in the cup?]

What on earth is this Nima asking?

What is as much as possible and stable enough?

Is the wording of physics so loose?

How about trying to solve the problem using chemical methods?

Filled and then frozen into a lump of ice?=+-?֏?

It is actually no wonder that Shi Yang came up with these wonderful thoughts.

The main thing is the person who came up with the question, Sun Tzu.

In fact, this question asks: "If the center of gravity of the tea cup is the lowest, what is the height of the tea in the cup?"

If you ask this, Shi Yang will most likely get a few points.

But if you use the description "as much as possible and keep it stable enough", people who are not sufficiently prepared for the competition may not be able to understand it.

So, more than 20 minutes later, Shi Yang had no choice but to look at the second question about a little man pushing a cart.

Haha, I know how to do this.

Shi Yang thought so in his heart.

He did quickly list a lot of mechanical formulas, ready to show off his skills.

But soon, he was baptized by the force analysis and collision analysis of flatbed trucks.

It's like someone asking you, can you walk?

Of course you will.

Then that person suddenly transformed into an old physics competition question maker, asking questions with a smile on his face.

"Yes? It will be easier if we do."

"Suppose your weight is m, calf length is l1, thigh length is l2, and step length is l3..."

"Please calculate-"

"1: Every time you take a step, the maximum pressure your knee and ankle joints bear."

"2: The maximum angle between the two thighs every time you take a step."

"3: Your left foot suddenly sprained, causing the time for the left foot to touch the ground and the pressure it endured 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 question maker should be beaten.

Unfortunately, this is an examination room.

And Shi Yang, even if he is the King of Huajing, facing this situation, he can only look forward to it and sigh.

Of course it wasn't just Shi Yang who was surprised at this moment.

Even if you are an experienced student, you will probably be at a loss when faced with this terrifying second question.

This kind of question feels like it is just to make a point. If the paper is too easy, I must add a question that no one can solve.

And even if you can solve it, the calculation amount is enough for you to do it for half an hour.

Therefore, the second question that Li Zheng worked out with a lot of effort was regarded as an extremely difficult problem in the eyes of most people. After writing down a few formulas and ideas, he gave up directly and rushed to the third question.

The opening of this third question is very eye-catching——

[The simplified model of an electromagnetic rail gun is as shown...]

When seeing this, half of the people thought of "Pao Sister", and the other half thought of "Bureau Seat".

There are also some people who think of both.

These people usually die miserably because they think too much and interfere with their thoughts on the exam.

If you study this electromagnetic gun carefully, you will find that it is very similar to the 32nd semi-final questions. For those who have thoroughly understood the real questions in previous years, it is equivalent to giving points.

For those who have never done it before, just study the electromagnetic gun in a down-to-earth manner.

The fourth question, the vibration question, is slightly less difficult, but it is a brand-new question with no template. It is the kind of question that you can definitely solve if you have a solid foundation.

The fifth question, the optical question, is probably the easiest question in the entire volume.

But calculus is still required, and the optical questions must be mathematical geometry questions.

Anyone who can do this will probably have some understanding.

Although there is still debate about who is better in physics or mathematics.

But the person who asked the question had an extremely clear attitude:

Mathematics is my father. If you don’t know calculus, go home.

The sixth question, the relativity theory question, discusses the large number of flying pions in cosmic rays.

A real veteran competitor will not panic at all when seeing something like this.

According to experience, the test content for things that seem particularly deep and mysterious is often very superficial. As long as you understand them, they are actually very easy to calculate.

Things like mini-carts are actually the scariest thing.

Finally, question seven, the last question.

If nothing else, just seeing a score of 70 is enough for a person to eat a pot.

The full score for this theory paper is only 320, and this question accounts for nearly 1/4.

You have to do it seriously.

That's what they say, but most people soon stop taking it seriously.

Because this question takes up an entire paper.

There are no paragraphs, and there are only a few commas. It is densely packed with words and symbols.

Not to mention the physics test, even if it is placed in the Chinese language test, it can be considered a top-notch question.

If you count carefully, you will find that this question alone contains nearly 2,000 words.

It’s longer than a chapter by some online authors.

There is no doubt that before this question becomes a physics question, it is first a comprehension question.

Anyone who scores below 120 points in Chinese will be eliminated!

When Shi Yang reached this point, his eyes were dull and he was dying.

Only a warrior with a meticulous mind, master of both Chinese and Physics, and excellent endurance, who can read it through even if the author does not break it down into paragraphs or without commas, can get a glimpse of it.

And Li Zheng believed that he was such a person.

At about two hours, he hit the final question——

[Lightning is one of the most magnificent natural features on earth...]

(Get ready to start~)

[Gamma ray bursts...Thunder cloud discharges...Small ice crystals...Cloud-to-ground lightning]

(Did you understand, brother? If you don’t understand, read it a few times.)

[Use... to measure the electric field in a thunder cloud in a cylindrical airspace... 0.15mv/m...]

[The radius is 2.5km and the height is 1.0km. Find the potential difference between the upper and lower ends of the area, the total amount of positive charges and the

Total electrical energy...]

[Known vacuum dielectric constant e=……]

(Come on, you can do it)

[During the electrification process, the charges at 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-to-ground lightning will occur...]

[Thunder and lightning clouds slowly move downward from high altitude until they...]

[Try to estimate the intensity of the surface electric field generated directly below this lightning cloud.]
To be continued...
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