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

"Damn! This question was unremarkable when I first came across it, but when I think about it carefully, it's absolutely amazing!"

"This question can kill people!"

"This question must be able to tell the winner!"

"..."

Group messages keep increasing.

Xu Heng suddenly said at this time, "Should I give the answer directly, or should I write down the process?"

Lord,"!!!"

Group members, "!!!"

Wang Quanquan, "!!!"

In the eyes of everyone, no matter whether you give the answer directly or not, the process needs to be good or not!

If you don't write, can you give an answer?

Many people can't figure it out.

"Master Xu Heng, what's going on? How could he ask such a question? Could it be that he..."

"No way, it's impossible, it's impossible at all! If he can really give the answer directly, I'll go to the bathroom upside down!"

Many of them didn't even understand the title, "???"

"Which big guy can explain how difficult this question is?"

"Yeah! I can't understand it at all!"

Those self-proclaimed students in the group fell silent at this moment, and turned into shrinking turtles...

"Have the conditions for this question been determined?"

"It shouldn't be! It shouldn't be at all!"

"..."

In the voice, apart from the voice of writing, there is no second voice.

Yang Kaixuan glanced at Xu Heng.

I saw Xu Heng resting his chin on one hand, looking very bored, as if he was waiting for something.

Yang Kaixuan murmured, "Are you listening to a song?"

never mind!

It's better to brush your own questions with peace of mind!

During evening self-study, Yang Kaixuan dared not take out his mobile phone.

Even if he is the second in the class and the second in the whole grade, he is still very self-aware, and he does not have such preferential treatment as Xu Heng.

So he didn't know what happened in the group.

As for Xu Heng, he waited and waited until the evening self-study was over.

"Ring Ling Ling..."

As the bell rang for the end of get out of class, Xu Heng couldn't wait any longer.

"I'll give you the answer directly!"

“2根号下（bρ’/gρ）*[π-arccos（ρ/ρ’）-1）]+2ρ’/（ρ-ρ’）*根号下（bρ’/gρ）*根号下（1-（ρ/ρ’）-1）2。”

"Hang up first. I still have something to do. I'll talk about it when I go back to the dormitory."

After speaking, without giving anyone a chance, Xu Heng hung up the voice.

He's going on a date with Yue Pingting!

There is no time to spend on this!

Walking on the dark campus road.

Yue Pingting asked, "Xu Heng, what's the matter with you? During evening self-study, I saw you wearing earphones, and you were in a daze for a while, and you were in a daze for a while? It feels like you are waiting for something."

Xu Heng smiled.

Just a mysterious smile.

Yes!

He is waiting!

He was trying to save face for Wang Quanquan, the group leader's question was really too simple.

As for the last question, Xu Heng had a similar one in his mind, so the answer is even more ready to come out.

Xu Heng held Yue Pingting's little hand, he didn't come to chat with her about this.

The two of you have limited time alone, so you can't waste it.

No matter what, you have to get tired of it, you and me.

……

After half an hour.

Xu Heng returned to the dormitory.

Yang Kaixuan looked at Xu Heng, "Xu Heng, I really wanted to cause trouble, and someone left the group."

Xu Heng, "?"

"It seems to have hit the opponent's self-esteem."

Xu Heng took out his phone to check, it was Wang Quanquan who had left the group.

Xu Heng roughly looked at the chat records.

"Forehead……"

Yang Kaixuan shrugged helplessly, "Actually, I meant that you never took a pen or wrote a word during my evening self-study! Just this sentence! I just said this sentence!"

Xu Heng rolled his eyes, "Then did you ask the group leader what the third question was?"

Yang Kaixuan, "I haven't had time to ask..."

"Then go ask."

Xu Heng turned around and went out to wash up.

When he returned to the dormitory, Yang Kaixuan couldn't close his mouth.

"You, you, you, you just do this kind of problem by mouth!"

"Xu Heng! You you you you..."

"Oh, that's right! Feng Hechuan called me just now, saying that Wang Quanquan hasn't figured out that question yet!"

"Xu Heng, how did you solve this problem?"

"Everyone in the group exploded, wondering how you came up with the answer!"

Xu Heng remained expressionless, "Actually, it's not that difficult, it's because you guys think it's complicated!"

"Because the lake is wide enough and the block size is small, so..."

Yang Kaixuan, "Wait! Wait! Xu Heng! I'm recording! Please continue! Continue!"

Xu Heng glanced blankly, "Because the lake is wide enough and the volume of the blocks is small, the absolute height of the lake remains unchanged during the movement of the blocks. Therefore, the lake can be selected as the origin of the coordinates and the vertical downward direction is the positive direction. Establish a coordinate system, hereinafter referred to as the x system."

"Assuming that the coordinate of the bottom surface of the object is x, when the object is not completely submerged in the lake, the buoyancy it receives is fb=b2xpg (x≤b), remember, this is the first formula, marked 1... ..."

Yang Kaixuan didn't understand the deep meaning of it, he didn't understand why Xu Heng had to emphasize it, but next.

“第2个……根据牛顿第二定律……第3个……将1,2代入3式中得第4个，……”

"..."

"From formula 15, it can be seen that when the object returns to the initial position again, exactly one vibration cycle is completed..."

"..."

"A>Xb, from the two formulas 13 and 17, ρ<2ρ', this is the 21st formula!"

What the hell!

Holy shit!Holy shit!

What the hell! ! !

Yang Kaixuan was already dumbfounded. It took several minutes for Xu Heng to dictate the process of solving this problem!

What's worse, it's still going on, it's not over yet...

PS: Thank you [Mo] [Holy King] for your support!thanks thanks! .

Chapter 163

"In this case, the object will be completely submerged on the surface of the lake from a certain moment during the movement..."

"..."

"At this time, the object moves in a uniform deceleration within the liquid, so...this is the 25th formula..."

"..."

"The 24 formula can be obtained from the 26 and 27 formulas, which is..."

"So in the end, the time required for the block to go back and forth from the initial position is 2 (t1+t2), that is..."

“2根号下（bρ’/gρ）*[π-arccos（ρ/ρ’）-1）]+2ρ’/（ρ-ρ’）*根号下（bρ’/gρ）*根号下（1-（ρ/ρ’）-1）2。”

"have you understood?"

Last five words!

Crit +999,999,999!

Yang Kaixuan was so dumbfounded that he forgot to turn off the recording!

It took Xu Hengguang such a long time to dictate this question, if he did it on paper...

Xu Heng also added, "It's not too difficult. There are no numbers in this question, so there is no calculation between numbers. It's already very simple."

Yang Kaixuan staggered and sat on his bed.

He is stupid!

The whole person was dumbfounded.

"Xu Heng...you are strong in literature and mathematics...are you also this strong in physics?"

"Did you take so many exams in every subject because you have so many full marks?!"

"Actually, if there were no restrictions, wouldn't you be able to take more exams?"

"This question is so difficult! You can still figure it out!?"

"You are not human!"

Yang Kaixuan knew very well that such a question was too difficult for him!

If physics problems are compared to mountains, then this problem is a Mount Everest!

Not only him, but 90.00% of the people in the group will think this is a Mount Everest!

too difficult!

The rest... should think this is K[-]!

The world's first peak and second in a puzzle...

Xu Heng rolled his eyes at Yang Kaixuan, "It's so difficult, you're making too much of a molehill."

After saying that, he went to bed, held his mobile phone, and went to play game 18.

Yang Kaixuan, "%￥#@￥￥......"