Become a master from now on

Chapter 319 Start the Exam (Seek Subscription Monthly Pass!)
Jin Zixuan was in great pain, thinking about whether to cross the boundary again.

Math doesn't work.

Not good at physics.

Could it be that he can only switch to liberal arts?When the time comes to study the history department, literature department or archeology department of Qingbei, etc.?
But if it came like this, would Qingbei still want him?

There are many people who are stronger than him in liberal arts. Isn't it because of his performance in the IMO competition that he was recommended by Qingbei?If he switched to liberal arts because of this, he might not be directly shot to death by the big shots in Qingbei.

Children, do you have a lot of question marks?
Yes, before the physics competition started, Jin Zixuan's forehead was full of question marks. He was full of confusion about the future and didn't know what to do.

……

The CPhO competition is coming as scheduled.

On this day, the weather in Shangjing was good, with rare blue sky and only a little smog floating in the sky. For Shangjing, it was the best time to go shopping. Some people have already painted Beautiful makeup, those who have boyfriends bring their own boyfriends, they rely on their good figures to appear on Wangfujing Street, waiting for the people who take pictures to send them to Weibo trending searches.

Naturally, some students gathered together in groups of three or four, and they appeared at the door of the milk tea shop, each holding a cup of three-point sweet no-ice milk tea, even if the little sisters came, they didn't worry.

This kind of people are unrestrained, at least for now, there is only one kind of happiness and joy in their hearts.

At the same time, in a college in Beijing, more than 300 candidates were assigned to different teachers.

There are 20 students in each class, nearly more than 20 classes, and each class has three to four invigilators. These invigilators are also teachers drawn from different colleges and universities in Beijing, and some teachers from neighboring provinces participate in the invigilation , they are all elites in the education field, and they are all pivotal figures in their respective schools.

Fang Chao was placed in a senior class. Before the exam, every candidate was searched to make sure there was no communication equipment or someone taking the exam.

After all, the National High School Physics Competition is a competition for high-level intellectuals. Unlike the senior high school entrance examination and college entrance examination, which are participated by all the people, there are a large number of candidates every year. It's so rigorous, but it's an academic exam after all. If you don't have any real skills, it's useless even if you borrow high technology. Only some experts in the competition can answer the questions.

If you take an English test, you still have a chance at least in the multiple-choice questions, but for physics and mathematics, it is useless for them to just know the answer. It must have problem-solving ideas and steps.

In a class of more than 20 people, Fang Chao, the three invigilators, sat in the second row in the middle.

In terms of physics competitions, the proportion of boys who take the test is much higher than that of girls, even higher than the proportion of mathematics competitions.

The male to female ratio of contestants in mathematics competitions can reach 8:2, while in physics competitions, it can at least reach 13:2.

Fang Chao has a personal experience of this point. During the mathematics competition, there are at least five girls in a class, but for the physics competition, the number of girls is only two, even in terms of appearance.

harm.

Not to mention.

Fang Chao is a man with a girlfriend, not to mention that his girlfriend is so good-looking and has such long legs, how dare he have other thoughts to think about unimportant things.

The papers will be handed out soon.

Physics is different from mathematics. For mathematics, you need to wear many tools, such as compasses, rulers, and triangular rulers. For physics, it only allows you to carry an ordinary calculator.

The physics paper is divided into three parts, the first part is multiple-choice questions, the second part is answer questions, and the third part is application questions.

Fang Chao soon began reviewing papers, which is an indispensable part of the exam.

11. This question includes 10 small questions. Candidates only need to do 5 small questions, each with 50 points, totaling 5 points.Among the four options given in each subtitle, some subtitles have only one option, and some subtitles have multiple correct options. Please fill in the serial number of the option that meets the requirements of the topic (inside) after the question.3 points for all correct choices, [-] points for incomplete choices, no points for wrong choices or no choice.

"It turns out there are multiple choice questions."

Fang Chao murmured, and soon got into the topic.

The first problem is buoyancy.

Choose C.

There is no other correct answer, it is a multiple choice question.

Second question.

Choose B.

Also not multiple choice.

The third question.

Choose A.

It's not a multiple choice question.

The fourth question.

Choose A and D.

"I almost missed you. Fortunately, no matter how deep you hide, you can't escape my golden eyes."

Fang Chao doesn't know how many strong players there are in the national finals, but his physical level is not low, and he can easily deal with such a situation.

And within a few months, as long as his Xueba points break through the million mark, then he will upgrade his physics level to LV4. If so, he will be fearless in the face of international physics competitions.

After 6 minutes, Fang Chao solved eleven multiple-choice questions, and the extra question was considered a gift.

The second part is short-answer questions, which are also five small questions. Candidates only need to make four questions.

Like the multiple-choice questions, except for the last two questions, they are all compulsory questions. For the last two questions, you can choose one of two answers. Those who answer both questions will be awarded points for the previous question as the answer.

1. (10 points) Under the action of the water pump, the Yintu fountain sprays water columns vertically upwards with the rhythm of the music. The water columns of different thicknesses and heights form a wonderful landscape.In fact, when we observe carefully, we will find that in the case of the same nozzle flow rate and no wind, the sprayed water column is not uniform in thickness when it rises in the air, but thick at one end and thin at the other end in the vertical direction.Please explain whether the water column in the ascending stage is thicker at the top or thicker at the bottom, and explain why the water column has this shape.

"Thickness? This topic is so obscene~"

Fang Chao thought so in his heart, but the movements of his hands were not slow at all.

Answer: The flow Q=SoVo of the water ejected from the nozzle is a fixed value, that is, the initial velocity of the water ejected is the same.

The volume of water coming out per unit time remains unchanged Q=SoVo=S1V1. As the water moves upward, V1 continues to become smaller, and the cross-sectional area S1 continues to increase. Therefore, the water column in the ascending stage has a thicker upper end.

"Hmph, it's done!"

The short-answer questions are like this, as long as you can know the general rules, you don't need to make special calculations, and the difficulty is not high. For a player like Fang Chao, it is simply easy to grasp.

(End of this chapter)