Question 2: "We see in the various explosion scenes of the movie: a chimney that is falling, and in the process of falling, it will break into two by itself." \ "I know the answer to this question" Wang Dazhuang raised his hand almost immediately after the three of them finished reading the question.
Raise your hand, it's really a hand raised.
Zhou Mi looked at Wang Dazhuang, who was actively speaking, with a twitching face, and could only nod and signal him to say.
"The break is in the middle" Wang Dazhuang's tone was firm, as if he had already read the answer.
"Why," Zhou Mi asked.
"I didn't say why I wanted to write about this question, anyway, I can be sure that it is broken in the middle."
"Why" In view of Zhou Mi's two whys, Wang Dazhuang couldn't help but use a routine at Zhou Mi: "Do you know what animals like to ask why?"
In Wang Dazhuang's view, Zhou Mi, a scholar, does questions every day, if she doesn't do questions, she is working to make money.
But even if Zhou Mi hasn't seen this paragraph, her IQ can quickly analyze that this is definitely a routine, and it is still a very old routine So he replied speechlessly: "I don't know." ” "It's a pig," Wang Dazhuang shouted excitedly.
"Oh."
Zhou Mi responded indifferently.
Well, this is not a routine game.
Shouldn't the correct way to answer be to ask "why?"
and then everything will fall into place The depressed Wang Dazhuang couldn't help asking, "Don't you want to know why?"
"I don't want to."
"Why" “” Zhou Mi twitched the corners of her mouth, looked at Wang Dazhuang with a sad expression, then looked him up and down, and nodded approvingly.
Li Lechen was already laughing, holding his stomach and almost unable to get up.
Stealing chickens is not a recipe for rice, and you can't fight a fox to make a fuss, anyway, Wang Dazhuang has a deep understanding, and when the language test paper comes out to apply these idioms, he can definitely show up to say it.
Back to the topic.
Zhou Mi also continued to be serious: "This question will definitely not be broken in the middle.
This is a very complex mechanical problem, which should involve angular velocity.
However, we haven't learned the angular velocity yet, so maybe we can build a mathematical model and solve it with high numbers. ” I don't think I learned high math either.
"Otherwise, don't do this question first, let's do the math test paper first," Li Lechen suggested, "Multiple choice questions and fill-in-the-blank questions are faster." ” "I've done all those questions, it doesn't matter if I do it or not."
Zhou Mi said frankly.
It doesn't matter if Zhou Mi does those questions or not, but Li Lechen has it, he is still waiting to copy it.
After speaking, Zhou Mi no longer wasted time, and immediately entered a series of exclusive question modes for top students, such as drawing, force analysis, and formulas.
However, this question is indeed not difficult, and after three or four minutes of calculations, Zhou Mi finally reversed and started again.
Subsequently, I even flipped through the book and looked up the formula.
Li Lechen began to get agitated.
"Is this question so difficult?"
Li Lechen suddenly shouted loudly.
It's not difficult, it's not difficult, this knowledge point is ten trillion why 8,653,065 Isn't it two-thirds of the way, what a simple question Yes, two-thirds Don't just say the answer, the anchor needs to explain Quite simply, the whole chimney was apparently falling at the same angular velocity before it broke.
Considering the top of the chimney, it should have fallen faster due to its own gravity, but it was forcibly "wrenched" back to an angular velocity equal to the lower part of the chimney, which caused the chimney to eventually break, and the calculation showed that the break would occur at 23 points of the chimney That's what the force diagram looks like If you use angular velocity to calculate, you need to use a formula This problem can also be solved mathematically, and you don't need to draw a force diagram, as long as you want Regarding Li Lechen's sudden question, the audience in the live broadcast room responded immediately, not only giving the correct answer immediately, but also various detailed explanations.
Ignore the completely incomprehensible explanations for the time being.
"Isn't it two-thirds, where is it as complicated as what you do" Li Lechen followed what he just said, and quickly "plagiarized" the answer to the barrage.
"Poof" This time it was Wang Dazhuang's turn to laugh: "You are not as good as half of mine, do you think it is more accurate to say two-thirds, then I guess three-fifths." ” "It's two-thirds, I'm sure."
Li Lechen said indignantly after flying an eye knife at Wang Dazhuang.
Zhou Mi still has a bit of a score for the fly question just now, but this chimney fracture question, if you don't calculate the reason from beginning to end, Zhou Mi can't figure out whether it will be two-thirds or three-fifths, or even maybe it may be one-half, or some complicated answers with root numbers.
Seeing that Zhou Mi also looked unconvinced, Wang Dazhuang became more confident: "I said that there is a theoretical basis for breaking at one-half, because the gravitational acceleration of any object on the earth is the same, falling together, the force is the same, and it will naturally be broken in the middle, tell me how you guessed two-thirds."
At first glance, Wang Dazhuang is close to the theoretical level of a scholar.
Li Lechen didn't bother to say anything.
In fact, he couldn't pronounce the names of those complicated formulas, all kinds of symbols, etc., only the addition, subtraction, multiplication, division, Arabic numerals, and at most alpha and beta.
Since you can't pronounce it, let's just write it.
So I drew a gourd on the manuscript in the same way.
I can't read it, I can't read it, but I can still copy it.
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This is a necessary skill for scumbags.
"Oh yes," Li Lechen suddenly stopped writing and looked up at Zhou Mi after he was halfway through writing.
Zhou Mi, who was looking at it, was immediately messy, and finally deeply realized what it was like to be unable to ask for it.
Li Lechen sighed unhurriedly: "It's too time-consuming to do this question, I'm afraid it's too late, otherwise I'll give it to you when I go back, you can copy the multiple-choice questions of other test papers for us first." ” "I'll take photos of the other questions for you at night, oh no, you can just take my test papers and copy them."
Zhou Mi said without hesitation, "You hurry up and finish this question."
"Okay then."
Li Lechen shrugged his shoulders, as if he was still reluctant.
In fact, he was already happy in his heart.
Because of the exchange of chips, Li Lechen continued to copy the solutions in the barrage, there are as many as four or five, from the force analysis, using angular velocity calculation, using advanced mathematics to solve, and even one of the solutions also uses a lot of professional formulas in engineering blasting, and the final answer points to two-thirds.
At this time, Zhou Mi should have cherished the time and hurriedly completed the optional fill-in-the-blank part of the remaining test papers, but she was so surprised that she was so hungry for so many solutions
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