"What are the hidden factors that affect whether this shit-stained advertising paper will eventually fly to Chen Chao or Zhang Yangyang? Can you give me some ideas? Open your mind, imagine boldly, and verify it with science. ”

At this time, one of the girls in the class raised her hand.

"Huang Xin, you can answer."

The physics teacher called the female student who raised her hand.

Huang Xin stood up, and then spoke, "Teacher, there are many factors that affect it, for example, the cross wind blowing from the left and right sides of the two of them may also be determined by the amount of positive and negative charges brought about by the clothes they are wearing, and of course, there are also factors from the law of gravitation, which may cause the advertising paper covered with dog shit to fly towards one of them." ”

The physics teacher nodded, motioned for Huang Xin to sit down, and then spoke, "Huang Xin said that the three conditions are correct, can affect this advertising paper, in which the cross wind effect is the largest, because the wind is strong, and the force area of the paper is also large, according to the buoyancy calculation, no matter which way to blow, it is possible to blow to another person, and the amount of positive and negative charge is also one of the influencing factors, but this factor can be ignored, because the charge generated in the human body is positive, At the same time, there is a lot of water in the human body, and the water is not charged, and the positive and negative charges in the human body are offset, even if there are some positive charges, but the earth carries a negative charge, so as to neutralize it, the human body will not be charged. ”

"Teacher, sometimes when we touch the doorknob or something like that, we suddenly feel numb, what's going on? Doesn't it mean that the human body is not electrified? ”

The physics teacher nodded and said again, "That's because there is an electric potential difference between people and doorknobs, and instantaneous discharges will occur, and air molecules will be ionized into ions, that is, positive ions and negative ions. ”

"Oh."

The student nodded.

The physics teacher spoke again, "Similarly, even if a person is negatively charged, the amount of charge is different, resulting in different electric potentials, which will also cause discharge, but these phenomena cannot affect it too much, after all, the distance between the paper and the human body is too large. ”

"Students, then let me ask you, apart from these, are there any other phenomena that can change this change?"

"Teacher, if one of the two of them farts and changes the pressure, then the place with high pressure will change to the place with low pressure, and it is possible to make the advertising paper fly to someone, right?" At this time, a laugh came from the rear.

When this possibility was pushed out, it immediately caused a burst of laughter.

"Hahahaha."

"I'm laughing to death......"

"Who is so talented? Can you even think of this? Fart? Hahaha......"

The physics teacher was stunned for a moment, but still said, "Yes, this student said that this possibility is not impossible, such as our southern coastal areas often have typhoons, that is, when summer comes, the tropical sea surface is directly exposed to the sun and the sea temperature rises, and the evaporation of sea water provides sufficient water vapor." The condensation of water vapor in the uplift releases a large amount of latent heat, which promotes the further development of convective motion, causing the pressure at sea level to drop, causing the surrounding warm and moist air to flow in and replenish, and then uplift, due to the high-speed rotation of the earth from west to east, resulting in friction between the air column and the earth's surface, because the closer to the equator, the stronger the friction. ”

"In tropical or subtropical oceans with an ocean surface temperature of more than 26 or more, a large amount of air expands and rises due to the high near-ocean surface temperature, which lowers the near-ocean surface pressure and continuously replenishes the inflow and rises from the outer air. Under the influence of the geostrophic deflection force, the incoming air rotates. When the rising air expands and cools, the water vapor in it cools and condenses to form water droplets, which releases heat and causes the low-level air to rise. In this way, the pressure on the near-ocean surface drops lower, and the air rotates more violently, and finally a typhoon is formed, and the influence of the typhoon is naturally much stronger than the crosswind, and it is even possible to make two people get on the advertising paper, but one person cannot produce such a large jet. ”

"Why not? What if it's a serial fart, loud and loud? ”

In the rear, the same doubts were expressed.

"Talent."

"Who the hell is this? Too bold, right? It's a barb. ”

"The voice came from the rear."

"Not me."

"It's not me, either."

"It's the guy at the back door!"

At this time, the real culprit was found out.

The physics teacher was also stunned, and then frowned and said, "Which class are you a student in?" It's class time, why are you walking around? ”

"Teacher, I ......"

Fang Chao just wanted to explain, but the physics teacher interrupted, "Don't listen to what you said first, when you just said that it was loud and loud, then how do you think a fart can be compared to a typhoon?" ”

When he heard this, Fang Chao subconsciously said, "Teacher, there is a problem with your topic itself, and besides, you also said it, let's use our imagination, let us open our minds, and use science to verify it, right?" ”

When the physics teacher heard this, he immediately smiled and said, "Okay, then you can tell me why." ”

Fang Chao put his trophies and medals on the ground, he didn't dare to expose his identity, now there are many boys who want to regard him as an opponent, it is said that even some girls with boyfriends have begun to pursue Fang Chao, so that these male classmates hate Fang Chao to the core, everyone is admitted to the city's No. 1 middle school Xueba, at the same time, why are you superior? Why are you so much better at math than we are? Isn't bullying people?

Therefore, after putting down the things, Fang Chao walked into the classroom, standing at the back door, and gave the physics teacher enough respect.

Respect for teachers is nothing more than that.

"Teacher, that's the case, you said that Chen Chao and Zhang Yangyang went to the movies together, and they came from two directions, but you didn't say where they ended up meeting first, assuming that in this case, Chen Chao and Zhang Yangyang were in a closed container, and there was a pipeline between them, and in the center of this pipeline, it was the advertising paper covered with dog feces, so Chen Chao or Zhang Yangyang at both ends of the container, Then any one of them can change the pressure in the container if they release a fart, not to mention a series of farts, not to mention the possibility of collapsing towards each other, or even bursting the container. ”