I kidnapped an alien civilization

The next question is: A small ball with mass m slides down from the vertex of a smooth semi-cylindrical with radius r and mass M. The semi-cylindrical ground is in smooth contact with the horizontal plane. Q: The ball does not leave the cylindrical surface during the sliding process The shape of the trajectory of the o-xy coordinate system relative to the ground for a period of time.

Now start answering.

This physics problem is not difficult, but the calculation without paper and pen really tests the brain.

Li Mo calculated in his mind, the trajectory of the ball is: m+M)^X^2/(M^2*R^2)+Y^2/R^2

He slowly raised his hand and replied, The shape of the trajectory of the ball is an ellipse.

The Ivy League student stared at the referee teacher, Will he get the answer right?

The students of Yan University stared at Li Mo: The master is the master, and he answered another question correctly.

The referee teacher glanced at the answer on the test paper and said, If the answer is correct, Team Yan will add 1 point. Now the score between the two sides is 10:4.

Now move on to the next question,

correct answer!

correct answer!

The referee teacher showed an incredulous expression: The answer is correct. Congratulations to Yanda for another point. Now the score between the two sides is 10:10.

The last question, please listen to the question: Which of the following is a living thing? A. Cooked fish B. Ultraman C. Doraemon D. An apple.

It's too simple, it's just a sub-question, even elementary school students can do it. The same thought flashed through the heads of all the students present.

I choose D, apples, and plants are also living things. The blond Ivy member who spoke rudely just now raised his hand impatiently. At the same time, he looked at Li Mo proudly. Victory is ours.

Wrong answer, one point will be deducted from the Ivy League. The final result is that the Yanda team defeated the Ivy League team 10:9. The referee teacher said expressionlessly.

How could this be? Isn't apple the only creature among these options? The blonde ivy member found it difficult to accept this result and questioned loudly.

Li Mo stood up and said, The answer to this question is Altman B. An apple is the fruit of a plant, not a living thing. You should study biology in junior high school.

He had to admire the rich connotation contained in this seemingly ingenious title. This question examines the basic definition of biology. Ultraman seems to be an absurd answer, but since the question assumes the existence of Ultraman, then he is a hypothetical existence of reality. And Ultraman is an existence at the same level as human beings, so he is naturally a creature. Isn't science all about bold imagination?

How did this happen, how did this happen. The blond Ivy member still couldn't accept such a result, and muttered to himself.

At this moment, the leader of the Ivy League stood up, and said with a livid face, Congratulations to Yanda University for winning this exchange match. We are waiting for your arrival in country M. He looked at Li Mo carefully, as if We must remember this young man who helped Yanda win the victory with his own efforts.

Isn't it enough to be ashamed, let's go. He said, without looking at the frustrated Ivy League members, he left angrily.

In the conference room, the students of Yanda who won the victory surrounded Li Mo and cheered.

It is extraordinary for a great god to go out.

Excellent, my brother.

This group of students was really enthusiastic. After finally escaping from the encirclement, Li Mo took out his mobile phone and called Professor Wu: Hey, teacher, the mission has been successfully completed.

Professor Wu on the other side of the phone seemed to have known the results of the exchange competition, and said happily: I know you can do it, what are you busy with recently, why didn't you come to class? Do you know that this semester, there are still research projects to be done? Do?

As a teacher, he didn't know the whereabouts of his students. Professor Wu also thought it was absurd, but he couldn't get angry. Whose own students are too genius.

Li Mo thought for a while, and replied: I'm doing a biological experiment, and when I'm done, I'll do research on mathematics.

Professor Wu: Okay. After hanging up the phone, he patted his head, Why did this kid start studying biology? Could it be that mathematics can no longer satisfy his appetite.

Li Mo left the campus and got into the car of the Security Bureau. Xia Qing was still angry because Li Mo didn't let her follow her into the campus just now, seeing that he had already boarded the car, she didn't say a word.

Back to the biological laboratory. Li Mo said to the driver.

The driver turned around to ask Xia Qing for his opinion. After all, Xia Qing was his immediate superior.

Listen to him. Xia Qing said angrily.

Still angry? Li Mo noticed that the assistant was having a little temper. You were not allowed to enter the campus just now to avoid unnecessary troubles. Isn't it very eye-catching that I have a beautiful woman by my side all day long?

Li Mo admired his emotional intelligence more and more. In order to coax a girl, he could say such words. This was unimaginable before.

I'm ignoring you, I've learned to be glib. Although Xia Qing was still angry, there was a little more smile on her face.

How are things going?

A girl's mood, the day of March. Li Mo nodded and said, It's perfect.

It was already evening when the car arrived at the biological experiment building. Li Mo entered the biological experiment and found that the workers of the electric power construction team were doing finishing work.

When you come back, the project will be completed in half an hour. The little fat man Chen Gong was directing the workers to install the equipment, when he saw Li Mo coming back, he immediately stepped forward to greet him.

Li Mo looked at the arm-thin cables and said, Very well, when the work is finished, you need to test the stability.

Chen Gong nodded and said: Of course, we will conduct a 2-hour stress test to ensure the stability of the current.

After explaining, Li Mo went back to the office and waited for the installation to be completed.

Boss, don't you need to eat? Xia Qing asked, clutching her stomach.

Too bad, since taking energy coffee, she has lost the feeling of hunger and has been discovered by Xia Qing several times. Li Mo said quickly: I'm a little hungry, but I'm still here to stare at it now, please help me bring a piece of bread back.

Xia Qing nodded, but she was puzzled in her heart: Boss is like not having to eat all day, it's so strange. Thinking, she picked up the small bag and went downstairs to eat.

It seems that we will set an alarm clock for three meals in the future. If someone notices something abnormal, it will be bad. Li Mo took out his mobile phone and set 7 o'clock, 12 o'clock, and 18 o'clock as alarm clocks. This way, every time the alarm clock rings, he can act like he needs to eat.

Yanda, the residence of the M country's Ivy League exchange team.

The yellow-haired member gently pushed open the leader's door.

Why are you here? Thanks to you, my bonus this year is gone. The team leader was holding the materials, and when he saw him coming in, he said angrily.

The yellow-haired man said in a low voice, I've already found out the true identity of the Yan University student who scored 7 points in a row.

Hearing what he said, the leader put down the materials in his hands. He was also very interested in that magic boy, although that boy ruined their trip to Yanda.

Seeing that his words had an effect, Huang Mao leaned closer and said, He is Li Mo, Li Mo who solved two world-level problems in a row and discovered Mo Xing.

It turned out to be him, the team leader had heard of this name when he was in country M. Li Mo is known as the leader of the new generation in the world, although he is very low-key, so low-key that he has hardly visited abroad. Even after discovering Mo Xing, he has not been interviewed by foreign media.

We are not wronged if we lose to him. The team leader said with a sigh.