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

It's two eggs!

Drawn in chalk!

Not two ellipses.

I also added a shadow effect to the eggs.

"This is an exaggeration! Xu Heng, when did you draw so beautifully?"

"It's the first time I've noticed that Xu Heng can draw so well."

Even Yao Ruiyi was surprised, she turned to look at Yue Pingting, "Xu Heng has many talents?"

Yue Pingting, "No, no! It must be a coincidence! He didn't draw when he was young."

Yao Ruiyi looked puzzled, "But the two circles he drew on the blackboard, together with the shadows, look like eggs!"

"If it was another teacher, or me, it would be two big zeros!"

Traditional Chinese painting pays attention to artistic conception and spiritual resemblance.

Xu Heng drew the outline of an egg, coupled with the realism of Western painting, the more people look at it, the more they think it is an egg.

The students screamed, "Xu Heng, are you here to paint or give lectures!"

"Yes, yes! Don't tell me, the eggs you painted really look like them! How long have you been in touch?"

Xu Heng, "Don't interrupt! I'm talking about the topic right now!"

Everyone, "Hahahaha..."

Xu Heng, "Shut up! Everyone, hold on!"

"Of these two eggs, one is stationary, and the other hits it first, which one will break first?"

"Assume that the two eggs are: No. 1 and No. 2."

Xu Heng wrote while talking.

On the blackboard, Xu Heng's font is slender!

Yao Ruiyi saw it clearly, "His font... Italic script? Xingkai? It should be Xingkai, but his previous handwriting is not so beautiful!"

"Is it because of writing on the blackboard with chalk?"

"It shouldn't be! If you can write such beautiful words on the blackboard, it should be even more beautiful on paper!"

"When did he practice calligraphy?"

Glancing at Yue Pingting, Yao Ruiyi was about to ask a question.

Yue Pingting, "Teacher, don't ask me any more, I'm still in class! After class, okay?"

Yao Ruiyi, "Eh..."

She was so sweaty and embarrassed!

Turning her head, she stared at Xu Heng with many questions.

On the podium, Xu Heng was graceful and graceful, without any twitching.

"When colliding, there will be a force between the two eggs!"

"Egg No. 2 is acting in this direction, to the right. Egg No. 1 is just the opposite."

Suddenly some students laughed and said, "I know! I know the answer! Break at the same time! Because these two forces are the same as each other!"

Xu Heng rolls his eyes, it's true temperament, rolls his eyes.

"Go, go! No! Listen to me."

"When they collided, the eggshell stopped suddenly, but the yolk inside couldn't stop, and kept going!"

"so……"

Excited, Tang Yongxue immediately stood up and said, "So there is a forward impact on the eggshell!"

Xu Heng smiled, "Yes!"

Tang Yongxue sat down immediately.

Yao Ruiyi was dumbfounded.

She never expected that Xu Heng's seemingly nonsensical lectures would enliven the classroom atmosphere to the extreme.

……

PS: Thank you [oO Fengzi Oo] [Holy Master, Spirit in the Painting] for your support!

Ask yourself!Ask yourself!Thank you!

There will be updates later!Continue to explode!

This is already equivalent to 10 updates for a normal author! .

Chapter 83

"So, for the eggshell of the No. 2 egg, the eggshell is subjected to two forces, one to the left and one to the right, and finally offset a part of it, and the remaining force is small, so..."

When Xu Heng said this, his voice paused.

The students began to chatter.

"So number 1 is easy to break! It's the static one that's easy to break!"

Xu Heng, "That's right!"

The students nodded and began to digest the question.

But when everyone had no doubts, Yao Ruiyi raised his hand.

Xu Heng, "Teacher, we don't need to raise our hands in class. If you have any questions, just stand up and ask."

"Of course, the premise is that there are no other students asking questions!"

Yao Ruiyi, "This is good! I learned it!"

She stood up slowly, "I want to ask, when I scramble eggs, the one that moves first breaks first! Why is that?"

Yao Ruiyi's words started from life, and the students were dumbfounded.

They looked sideways one by one, looking at Yao Ruiyi, then at Xu Heng.

"Hahaha! The head teacher is here to tear down the stage!"

Some students muttered.

Xu Heng was calm and composed, "It depends on whether the eggs you use, Teacher, are in this kind of parallel collision! If you have one high and one low, it will involve other forces!"

Yao Ruiyi sat down thoughtfully.

Xu Heng continued, "Is this question OK? Then let's move on to the next question!"

"We turn the eggs into three!"

"Does the ball thrower in the circus know?"

"It's three, there is always one in the air, and the other two are in the hands of the show!"

"Let me tell you! This question is a question for the college entrance examination, but I have also passed the exam for the high school entrance examination!"

"If you don't, it's a shame!"

As he spoke, Xu Heng wrote a question on the blackboard:

An actor is performing acrobatics. What is the closest possible amount of work done to an egg when he throws it?

A.300J

B.3J

C.0.3J

D.30J

Xu Heng, "What to choose? Whoever chooses this question correctly, and give the basis, I will not talk about it, and go straight to self-study until the end of get out of class."

"This question is very simple! Everyone, work harder! I really can't go on talking! Let me rest!"

His class!

What he says counts!

18

In this way, the students will also be convinced.

Self-study is better than being boring in class!

The students all seemed to have been beaten with chicken blood. At first glance, the topic was super simple.

But as soon as they got started, and it was still this kind of choice, they became ambiguous.

"Exclude A first!"

"agree!"

"But what next? 3? 0.3? 30? How?"

"This... I'm confused, I'll choose 3!"

"Yes! I also think 3 is very reliable!"

Yue Pingting frowned, thought for a while, she was not in a hurry to choose, she was looking for the formula, and the result could be calculated with the formula.

But for a while, she still hadn't found it.

As for the students who are better at learning, they start to work on the transformation of mechanical kinetic energy and gravitational potential energy.

"Shhhhh!"

It was the sound of pen and paper.

Yao Ruiyi was also very interested in this question, and couldn't help picking up a pen and paper to write and draw.

Xu Heng looked at the time, and then at the crowd.

He sighed, "get out of class is almost over! Ladies and gentlemen, I'm going to talk! I don't like to procrastinate!"

"This question is very simple! You need to change your thinking a little bit."

Everyone, "!!!"

I always feel despised by Xu Heng!

Depend on! ! !

One by one indignant.

But Xu Heng didn't give a chance to refute, and said directly:

"The work done by the human hand on the egg should obviously be transformed into the kinetic energy of the egg. During the upward movement, the kinetic energy is transformed into the gravitational potential energy. work."

"The gravitational potential energy of the highest point is equal to mgh."

"Pay attention here, this is the mass of the egg, about fifty or sixty grams, which is 0.06kg."

"We usually calculate g by 10."

"As for the height, the position from the navel to the mouth is about 0.5 meters, so I don't need to say more about the answer, right?"

Everyone was very reluctant and complained, "So choose C."

Xu Heng, "Yes, so choose C."

"Of course, when you learn more, don't say [I don't read much, don't lie to me], you will know that the distance traveled by force is very short, almost zero, so the answer is ready to come out."

Everyone was about to complain, but Xu Heng's second method caught everyone by surprise.

too suddenly!

"Xu Heng, please remind me next time when you talk about the second method, we haven't had time to change our thinking yet!"

"Yeah! It was very sudden! The key is that your second method is so simple, it's over before I have time to listen!"