Xueba, I beg you to go and escort him quickly!

……

Until you read it all in one go!

He froze in place!

The whole person is dumbfounded!

"hiss……"

Back to God!

He gasped, turned to the first page again, and read it again!

As if bewitched!

Second time...

The third time...

……

Fifth time!

Five times in a row!

Suddenly, he got up, took Xu Heng's unsigned notebook, and left the study room.

According to the principles of the self-study room, these notebooks are not allowed to be taken out!

Surveillance is installed here!

But how could Xiao Sanshi care about these things now!

He went directly to the office of the director of the entire institute!

"Boom boom boom!"

Knock on the door!

Under normal circumstances, it is the secretary who opens the door!

As for the director himself, he is either busy with physics research, or he is leading many academicians or students to carry out physical surveys.

Seeing Xiao Sanshi's anxious look, the secretary also became serious, "Academician Xiao, what's wrong?"

Xiao Sanshi raised the notebook in his hand, "Call the director immediately! I have something important to talk to the director face to face!"

Secretary, "I'm sorry, Academician Xiao, the director is currently conducting physics research in the laboratory!"

Xiao Sanshi's expression was extremely serious, "Please call the dean immediately! Immediately! If any accident occurs, I, Xiao Sanshi, will be responsible for the consequences!"

The secretary had never seen Xiao Sanshi so excited!

Although there are a lot of academicians like Xiao Sanshi in the research institute, no one has ever been as excited as Xiao Sanshi today!

Not to mention others, even Xiao Sanshi himself has never been like this in his 20 years in the research institute!

The secretary's eyes lingered on the notebook in Xiao Sanshi's hand.

Is it because of it?

After thinking about it again and again, the secretary called the director's phone number in the laboratory.

PS: There will be updates later, please ask for all support! .

Chapter 176

Peking University!

Dean Nie took Xu Heng to dinner and returned to school.

"Professors Fang Zhonggui, I really want to get to know you, do you think it's okay?"

Xu Heng did not refuse.

Therefore, the two came to the professor's office in the School of Physics of Peking University.

At this time, Fang Zhonggui and the three professors were waiting nervously.

I don't know why, but this is more nervous than their first blind date and first love.

"Dong dong dong..."

Heart beating hard.

Fang Zhonggui is old~ his face is even a little red.

The other two professors rolled their eyes at Fang Zhonggui, "Professor Fang, you are a bit thin-skinned-! You are all red!"

Fang Zhonggui, "cough cough cough! Stop fighting, both of you! Xu Heng will be here soon!"

"Boom boom boom!"

There was a knock on the door, and Fang Zhonggui wanted to go forward to open the door, but he never expected that these two professors were faster than him.

Fang Zhonggui, "*%￥#￥￥......"

This is my office!

You two guys are too much!

Under other circumstances, they would have to say "come in" coldly to the door one by one, and let the other party push the door in by themselves.

But today-

Rushing to open the door.

Dean Nie and Xu Heng stood in front of the door, stunned.

Dean Nie reacted most prominently, "No, the three of you are...?"

Xu Heng, "???"

"What's the matter, Dean Nie, is there a problem?"

Dean Nie smiled, "These three professors are never like this. They are all very busy. When someone knocks on the door, they always let the other party come in on their own initiative!"

"But today is a good day. For you, these three are probably scrambling to open the door for you."

Xu Heng was startled, then smiled, "Three professors! That's an exaggeration! Thank you!"

The three of Fang Zhonggui smiled awkwardly, "Come in and sit down! Hurry up!"

Fang Zhonggui went to make tea himself.

Dean Nie also said, "Student Xu Heng, maybe you don't know Professor Fang very well. He is a punctual professor! He never takes up a minute of the students' time, and doesn't give the school a minute of his time."

"He gets off work on time and never delays! Even if he wants to delay the meeting, he can slip away!"

"In so many years, this is the second time he hasn't returned from school so late."

Fang Zhonggui's face is thin, and his old face is even redder.

He was at a loss and pushed his thick myopia.

Xu Heng, "What about the first time?"

Dean Nie and the other two professors smiled, "Of course it was when I gave you a question before!"

It was only then that Xu Heng remembered, "That's it! I really wasted your time, Professor Fang."

Fang Zhonggui, "cough cough cough! It doesn't matter! It doesn't matter!"

Xu Heng's first impression of these professors was quite good.

Especially Fang Zhonggui, this shy little old man, is really impressive.

Therefore, Xu Heng is also willing to discuss physics knowledge with them.

As we chatted, we got to the topic.

These professors complained.

"Xu Heng, do you know? The questions we gave you have been saved for a long time, and they are ready to be used in the postgraduate entrance examination papers!"

Xu Heng scratched the back of his head and looked at Professor Fang apologetically.

"Sorry! Professor Fang..."

Fang Zhonggui laughed, "Student Xu Heng, don't take it to heart, we are also voluntary!"

"Why not..."

As soon as they looked up at Xu Heng, they were all curious about what Xu Heng would say next.

Of course, what the four of them guessed was that Xu Heng would apologize again.

Can--

"How about I help you with a few questions?"

The current Xu Heng is a hundred times, even a thousand times stronger than before.

Therefore, it is still very easy for him to ask a few questions!

But in the eyes of Dean Nie and Professor Fang Zhonggui, this is nothing short of fantasy!

They were stunned on the spot.

"This……!!!"

"Student Xu Heng, do you know what you are talking about? How many questions do you say you are going to give us for the postgraduate entrance examination?"

"You... this, this... you... ours...?"

"Student Xu Heng, do you know what you just said?"

Dean Nie reminded, "Student Xu Heng, we know your kindness, but there is still a big difference between asking a question and answering it. This is not a matter of the same level at all..."

Xu Heng smiled, "I have published test papers, so I still have a little experience."

Geek!

Dean Nie and Professor Fang Zhonggui were stunned.

Yes!

This guy was invited to participate in the Olympiad competition!

"It's just that... the Math Olympiad competition is aimed at high school students! Student Xu Heng, these questions are all aimed at college students who are in their third or fourth year. They are questions for the postgraduate entrance examination."

Look at these worried looks.

Xu Heng wanted to help them even more.

After all, without his knowledge, he kept asking for physics problems, and Professor Fang Zhonggui didn't say a word!

Xu Heng respects such professors.

Although part of their purpose is to test their own background, does Xu Heng need to mind?

nonexistent!

If it is calculated carefully, without them, Xu Heng would not have signed in at the Institute of Physics.

Not just anyone can research.

As Dean Nie said, if you want to go in and visit, you need to apply for it!

Xu Heng smiled, looked at the bewildered faces of the four people, picked up the pen and paper next to him, and said while writing, "I've said it all to help you, the final decision is up to you, I will help you in a complicated way."

The four looked at each other and leaned over.

Sometimes, the friendship between people deepens, that is, you trouble me, and I trouble you.

topic:

As shown in the figure, the rigid adiabatic melters A and B are placed horizontally, and a thin adiabatic rigid tube with an adiabatic valve and a porous plug connects the two containers A and B.Initially, the valve is closed, A is filled with some ideal gas, the temperature is T1; B is a vacuum.

The valve is opened first, and the gas slowly enters into container B through the porous plug.When the pressure of the gas in container A drops to the ratio α of the gas pressure in A at the beginning, close the valve again.

Assuming that there is no heat exchange between the part of the gas remaining in container A and the gas entering container B, find the ratio of the mass of the gas in container B to the total mass of the gas.

After writing this, Xu Heng paused for a moment.