My Identity As A Schoolmaster Has Been Exposed

"Xu Cong, can you do it?"

"Yes, this is the subject of the third year after all! It involves physics in the third year, do you know how?"

"Say something..."

"Xu Cong? Hey, Xu Heng, don't pretend to be dead?"

"Don't be ashamed!"

"But there is excuse. After all, Xu Cong is still a sophomore in high school."

"Hey hey, isn't it a pity that Senior Liu Yixiang's ice cream?"

The roommates were a little worried about Xu Cong, and some even started to comfort him. Xu Cong was silent for a moment, then the corners of his mouth raised, very confident.

He cleared the storehouse and prepared to speak, Liu Yixiang sat in a precarious manner, pricked his ears.

"I probably went through it in my head and came up with a few simple methods, namely the equivalent center of gravity method, the law of sines, and the violent measurement method."

Three!

Liu Yixiang's eyes were full of surprise, and sure enough, Feng Nianchang was right! He was a physical genius, an absolute physical genius!

Far surpassing his own kind of academic bully, he is a super academic bully!!!

At this moment, Liu Yixiang let go of an ant from the Buddha and looked up at Xu Cong. It felt like standing at the foot of the Leshan Giant Buddha and worshiping the Buddha!

Too high!

"His" Liu Yixiang was extremely serious.

Xu Cong glanced at Liu Yixiang, and then slowly said, "Let’s talk about violent measurement first, and use a protractor to measure it directly."

Puff!

Everyone is dumbfounded!

"Can it be like this?"

Liu Yixiang also almost made a big somersault. I came to ask for advice and study seriously. You actually told me to measure with a protractor?

"This is a college entrance examination question! Xu Cong, you, this, this is too rigorous!"

Everyone also teased Xu Cong: "Yes! If you say so, I can get the answer directly!"

"So what is the degree of this question?"

"Measure it?"

"I have a protractor! What is the angle you just calculated?"

"I measured it, 15! What was the answer just now?" Liu Yixiang's three views were subverted.

With a trembling voice in surprise, he said, "Yes, it's 15!"

"I'm going to go! Really? Really? It's really 15. What the hell is going on?"

The seemingly nonsense solution came to the same correct answer! Liu Yixiang suddenly felt that he was too silly to study hard.

The roommates screamed, "Absolute! Xu Cong, you absolutely!"

"In this case, isn't it a bug in the college entrance examination questions?"

Xu Cong nodded and explained to them: "It can be said that the pictures for the college entrance examination are all very standard."

Liu Yixiang got goose bumps all over his body, and he was unable to refute it, because the result measured with a protractor just now was indeed the correct answer.

Xu Cong ignored the thoughts of these people, and continued to say to them: "Let’s talk about the equivalent center of gravity method."

After taking Liu Yixiang’s pen and paper, Xu Cong simply made a vertical, made some points, and then wrote the formula, three times five divided by two, and he got 15. He didn’t say anything during the whole process, because the teaching tyrant, like a classmate who teaches in general, Not the same.

If he doesn't understand the process after writing it all down, then he is really a waste, and naturally there is no way to talk about it.

"The third method is the law of sine, you can calculate the a ball and b ball, and you can get the answer."

Xu Cong finished quickly. The roommate’s ice cream hasn’t been eaten yet. Xu Cong’s topic is over. Liu Yixiang froze in place, thinking about these three solutions.

He wants to digest!

Digest well!

The roommates had numb scalp, and felt that they were listening to the heavenly scriptures.

"Hey! Only now I understand how good Xu Cong is to us! It is still step by step to give us the topic, wait for us patiently, and write it to us."

"Before we thought Xu Cong was deliberately embarrassing us! Sorry, we were wrong!"

Without comparison, there would be no harm. The roommates looked at Xu Cong and admired them even more. It was not an exaggeration to digest the lecture for three minutes and half an hour.

Liu Yixiang stayed in a daze for half an hour at Xu Cong hostel before he gradually straightened out. Then he let out a long sigh of relief and said to him, "Huh! I understand! Thank you! Student Xu Cong!"

Thumbs up at Xu Cong, Liu Yixiang said, "I'm going to stop!"

Xu Cong waved his hand and said nonchalantly, "Is there any more? If not, I will wash and sleep."

"Yes!"

He came up with another question. At this time, Liu Yixiang was very humble, and his attitude was more humble than when he first came to the dormitory.

When he took the question, his body was pressed again and again, and he was about to rickety.

topic:

As shown in the figure, two parallel metal rails are fixed on the same horizontal plane. The uniform magnetic field with magnetic induction intensity B=0.50T is perpendicular to the plane where the rails are retracted. The resistance to the meeting is very small and can be ignored.

The distance seen by the guide rail is L=0.20m. Two parallel metal rods A and B with a mass of m=0.10kg can slide on the guide rail without friction, and remain perpendicular to the guide rail during the sliding process. The resistance of each metal rod is R=0.50Q.

At t=0, both rods are at rest.

There is a constant force of 0.20N parallel to the guide rail acting on the metal rod armour to make the metal rod slide on the guide rail.

After t=5.0s, the acceleration of the metal rod armour is a=1.37m/s square. What is the speed of the two metal rods at this time?

The picture is simple, but this question is not simple at all.

After Liu Yixiang gave the title to Xu Cong, he respectfully said, "Xu Cong, I’m in trouble."

As soon as this remark came out, it was Liu Yixiang that even himself was in the cloud. The roommates took a cold breath and muttered, "Not even him?" Then they fixed their eyes on Xu Cong again.

After Xu Cong finished reading the problem, an idea of ​​solving the problem automatically appeared in his mind, and then he began to analyze it: "Look at the speed at the moment, there is acceleration, the initial speed is zero again, there is acceleration, and there is time. Isn't it simple?"

Liu Yixiang nodded, but the roommates stared at each other, what and what?

totally do not understand!

If it weren't for Liu Yixiang's question, they almost couldn't help interrupting Xu Cong, insisting on letting him tell the truth.

"It's the same as playing a riddle, hey..."

Xu Cong continued, speaking quickly, Liu Yixiang's brows became deeper and deeper, and his expression became less and less calm.

"Wait! Wait a minute! Student Xu Cong, please wait!"

Seeing his request, Xu Cong stopped and waited for Liu Yixiang to digest it slowly.

More than ten minutes later, he looked at Xu Cong awkwardly, "Excuse me, please go ahead!"

Xu Cong did not say too much, and continued: "External force minus this force, the external force is known, and other values ​​are also known, only the current is not known."

"How is the current calculated?"

Liu Yixiang immediately followed: "The electric energy potential divided by the resistance..."

"Finally, the answer will come out, right?"

"Is it super simple?"

simple?

The heart of the roommates are almost twisting into a group, the anger has been obviously tortured by these questions, and they all said: "I really want to beat Xu Cong! Senior Liu Yixiang, as long as you nod, we will beat him. Meal! Too arrogant! Is this simple?"

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