This top-tier academic genius

Chapter 12 This is very unphysical

Physics class in Class 2 of Senior Three.

Physics teacher Huang Nanfang wrote the solution process on the blackboard. Lin Yan glanced at it and realized that his answer was completely correct.

Instantly, his confidence soared.

It's time to start showing the real technology.

Let's move on to the next question.

A certain mass of ideal gas is sealed inside a well-conducting cylinder with an initial pressure of p₀ and a volume of v₀. A piston moves slowly under the action of an external force, changing the gas volume to v₀/2. Neglecting all friction and maintaining a constant ambient temperature, find: the pressure p of the gas after the change.

If it were the old Lin Yan, she would have been completely baffled by this question.

What does this mean?

But he is completely different now than before.

Although his talent for "physical intuition" is only at a beginner level, it gives him a divine advantage, allowing him to see through the essence of a problem directly.

"The cylinder conducts heat well, and the ambient temperature remains constant. Oh, the test is about isothermal changes, Boyle's Law."

However, Lin Yan was also at a loss for words at this point.

He didn't remember the formula for Boyle's law.

My basic knowledge is too weak. I can't remember many of the basic knowledge points in the book. It seems I need to spend some time to brush up on them and pick them up again.

He could only open his textbook, find the corresponding unit, and then write down the answer in the blank space for that question on the test paper:

Isothermal changes satisfy Boyle's Law

p₀V₀ = p·(V₀/2)

Arrange to go to V₀:

p = 2p₀

Completed and feeling a great sense of satisfaction, he moved on to the next problem.

Lin Yan's deskmate, Zhu Guanqun, noticed something was off about Lin Yan and glanced at him sideways.

In the teacher's eyes, Zhu Guanqun's grades were only average in the class, but compared with Lin Yan, his advantages were still obvious.

For example, the scores of the two test papers lying on the desk were 8 for Lin Yan and 38 for Zhu Guanqun.

Far ahead!

"Oh, doing homework."

"Wait, something's not right!"

Lin Yan's test paper, which was originally almost blank, was now filled with answers. The problem was that the teacher had only just gotten to the third question, but Lin Yan was already working on the last one.

In other words, he was solving the problem on his own.

Zhu Guanqun glanced at the third question on Lin Yan's exam paper: p = 2p₀

I glanced up at the teacher's blackboard. At that moment, Teacher Huang was saying, "So, the answer is p = 2p₀. Isn't it easy?"

Good heavens, exactly the same!

Lin Yan's answer was actually correct; the problem was that he wrote it down before the teacher even explained it.

With a hint of doubt, Zhu Guanqun quickly glanced at the answer to the fourth problem on Lin Yan's test paper.

Question 1: I = BLv /(R + r); Question 2: P =(B²L²v²)/(R + r)

Then, he waited anxiously for the teacher to explain the fourth question.

Huang Nanfang, sleeves rolled up, said, "The fourth question is a bit interesting; many students stumbled on this one. As shown in the figure, given..."

"Class, this question actually tests the conservation of energy and equivalent circuits. It should be solved like this..."

"First question... Total resistance R+r, current I = BLv /(R + r)."

Upon seeing this, Zhu Guanqun paused for a moment; he was right again.

"The result of the second question is P = (B²L²v²)/(R + r)."

Looking at the teacher's written solution process and answers, Zhu Guanqun glanced at his deskmate's test paper and completely lost his composure.

All correct!

This...this isn't right.

I, who scored 38 points, listened attentively but still didn't understand; you, who scored 8 points, answered the questions with ease.

How could this be? It's impossible, absolutely impossible!

But the facts are undeniable, and we have no choice but to believe them.

Zhu Guanqun suddenly realized that Lin Yan had solved a math problem in a flash last time, and this time he was solving a physics problem with ease.

Could it be that he's actually a hidden academic genius, and now he's finally dropping the act and revealing his true colors?

As if he had discovered some incredible secret, Zhu Guanqun smiled smugly and leaned closer to whisper, "Lin Yan, I've discovered your secret, hehe. You don't want anyone else to know your secret, do you?"

"Um?"

Lin Yan expressed her confusion, wondering how her deskmate could be a Japanese netizen.

Unbeknownst to them, the teacher on the podium had quietly moved to the side.

"Zhu Guanqun, stand up."

"You don't pay attention in class, you whisper, don't you know how many points you got? Look how much your grades have dropped. You could still pass last semester, but this semester you're completely hopeless."

Zhu Guanqun, caught red-handed, was scolded until his face turned red with embarrassment.

Huang Nanfang turned to Lin Yan, intending to say something as well, but suddenly noticed the exam paper on Lin Yan's desk.

Hmm? Solving an extra problem?

"What's your name again?"

"Teacher, his name is Lin Yan," his deskmate Zhu Guanqun quickly answered.

"Lin Yan, let me see your exam paper."

Lin Yan had no choice but to hand it over. Huang Nanfang took it and looked at it; it really was solving an additional problem.

Only a few strokes:

W=qEx =(1/2)mv_m²

The maximum speed can be obtained directly from q v_m B = q E.

v_m = E / B

The last bonus question on the exam paper was quite difficult.

A uniform electric field E points horizontally to the right and a uniform magnetic field B points perpendicularly into the paper. A charged particle with mass m and charge +q is released from rest at point P. Gravity is negligible. The particle undergoes cycloidal (or cycloidal) motion in the combined field, neither moving in uniform circles nor in a straight line. Find: the maximum velocity v_m of the particle during its motion.

Actually, this question was a little beyond the curriculum. No one in the class got it right. One or two people solved it but got it wrong, and most people left it blank.

Huang Nanfang asked curiously, "Bonus question, how did you arrive at this answer?"

Lin Yan did not stand up, but sat down and replied clearly: "The Lorentz force does no work, only the electric field force does work; at the maximum speed, the Lorentz force and the electric field force are in perpendicular equilibrium."

Huang Nanfang glanced at Lin Yan in surprise. The conspicuous "8" on the test paper and Lin Yan's answer just now gave him a sense of absurdity.

Students who score in the single digits on exams can easily solve bonus questions that no one in the class can.

This is so unphysics-incompatible!

Is this... a breakthrough?

Huang Nanfang glanced at the handsome student with a complicated expression. He wanted to say something, but didn't. In the end, he returned the test paper to him without saying anything and went back to the podium to explain the questions again.

The whole class was confused about what had just happened. It seemed that Lin Yan had solved the bonus question, but the teacher didn't say whether it was right or wrong.

Only Zhu Guanqun guessed what was going on; Lin Yan's answer must be correct.

Last time it was math, this time it's physics. I didn't realize my deskmate was so amazing. He's incredible!

Before I knew it, the bell rang, signaling the end of get out of class.

Huang Nanfang readily stopped explaining the problem he had only halfway through. He was a teacher who didn't like to go overtime, so even though the students disliked physics, they didn't dislike him.

"We'll cover this problem another time. get out of class dismissed. Lin Yan, come here for a moment."

Lin Yan stood up and followed them out amidst the puzzled looks of his classmates.

Watching the small tuft of hair on Teacher Huang's head bob gently as he walked ahead, Lin Yan thought of a question: Are people who study physics prone to going bald?

"Don't you want to ask me why I called you?" Seeing that Lin Yan was just following him without saying a word, Huang Nanfang had no choice but to ask himself.

"I think I don't need to ask myself, the teacher will tell me."

"You're quite composed. Did you do that bonus question yourself?"

"certainly."

Huang Nanfang countered, "Then why did you only get 8 points on the last test? Did you think it was too easy and didn't want to do it?"

"To be honest, teacher, I really didn't know how last time, but I suddenly figured it out this time," Lin Yan said sincerely.

"Alright, you can go back now." Seeing this, Huang Nanfang stopped asking questions and assumed that the other party had truly come to his senses.

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