Shulou(Shulou.com)11/24 Report--

Seeing the rapid development of the motherland's space industry in recent years, and thinking of our long and rich history, thousands of Chinese children like Xiangning are very excited.

At the same time, being good at thinking is also a virtue of thousands of Chinese children like Xiangning. There are two small questions:

1, the rocket is so fast, is it as fast as the monkey in Journey to the West?

2, that monkey turns a somersault, how much uranium-235 does it take to supply energy?

First of all, the problem we have to solve is the weight of Sun WuKong's whole wardrobe and the energy needed to turn a somersault.

How much does Sun WuKong's golden hoop stick weigh? The answer is 13,500 jin. There is a saying in Journey to the West: "there are two gold hoops at both ends, and a section of black iron (black) in the middle, with stars laid out; there is a line of words close to the hoop, 'Ruyi Golden Hoop stick, weighing 13,500 jin." and there are dense patterns and dragon patterns and Phoenix seal seals. If you want to be small, Yingying is less than a grip; when it is big, it is full of heaven and earth. "

Because one jin in the Ming Dynasty is equivalent to 596.8 grams today, the weight of the golden hoop stick is about:

13500 × 596.8 / 1000008056.8 kg

Let's talk about Sun WuKong's weight again. In the cartoon Dragon Ball and its derivative works, Wukong weighs 62 kg. We don't know how people who are living a good life understand the essence of Journey to the West and derive Sun WuKong's weight from it. So, we don't need this number.

Moreover, according to the actors, the monkey is the thinnest, the Tang monk is the second thinnest, then Sha Wujing, and then Zhu Bajie. It can only be calculated roughly: in the second round of Journey to the West, the devil said that he was "less than four feet and no more than thirty years old." Wu Chengen's one foot at that time was about 31.1 mm today, that is to say, Sun WuKong is less than 1.24 meters, so let's assume that the empty height is 1.24m.

Also considering that Sun WuKong popped out of a stone, his body should be made of silicon dioxide (SiO2). After refining in an alchemy furnace, he should not escape silicon (Si) and oxygen (O). Taishang Laojun's gossip furnace temperature is about 1200 ℃, silicon dioxide melting point 1700 ℃, so Sun WuKong will not melt, that density is 2.6g / cm ³bar.

Today, the volume of a normal adult is about 0.06 m ³. Sun WuKong, a relatively thin rhesus monkey with a height of only 1.24m, is about 0.03m ³. In this way, Sun WuKong's weight should be:

2.6 g/cm height × 0.03m ³= 79500g=78 kg

Don't forget, Sun WuKong also has a 24K hoop on his head. There are at least two taels of hot gold hoops. Add Wukong's leather skirt or cassock, and the whole body outfit is about:

80 kg (dead weight) + 8056.8 kg (golden hoop bar) = 8136.8 kg

Then we'll take a look at the somersault cloud. Sun WuKong has a somersault cloud of 108000 li. In the Ming Dynasty, one li equals 180ft, one Zhang equals two steps, one step equals 5ft, and one foot equals about 32.66cm.

180 × 2 × 5 × 0.3266mm 587.88m

So, the distance Sun WuKong can turn over a somersault cloud is:

Hobby 108000 li x 587.88 m / li = 63491.04 km

There is no limit to which direction the monkey flies, but if you follow it upward, you have to overcome gravity and do work. According to the data, the acceleration of gravity on the earth is 9.780 m / s ²at the equator, 9.832 m / s ²at the Arctic, 9.807 m / s ²at sea level at 45 °north latitude, and 9.801 m / s ²at Beijing.

When we look at Sun WuKong's business trip route, it is not the westward direction that people have always thought, but the honey circle. However, the whole journey has not been too close to the North Pole and the equator, although the snow-capped mountains under the canyon, but we do not care, let's take g as 9.80 m / s ².

If Sun WuKong overcame gravity to do work and jumped away from the earth, then:

E1=mgh=8136.8 kg x 9.80m Universe x 63491.04 km=5.06e12 J

In addition, some people like to use the kinetic energy equation to calculate the work that Sun WuKong needs to do to turn a somersault with a golden hoop stick. If it takes 0.5 s to turn a somersault, Wukong will move at a speed of:

Vault 63491.04 km / 0.5 km/s 126982.8

E2=1/2mv ²= 1 kg 2 × 8136.8 kg × (126982.8 km/s) ²= 65.6 trillion J

But in fact, there are some problems with these calculation methods. First of all, Sun WuKong's movement is bound to be subject to resistance: there is air resistance parallel to the earth, and gravity is applied upward. If Sun WuKong wants to maintain a uniform somersault, he needs to keep bursting energy and convert it into kinetic energy. Moreover, even if the initial speed is as high as 1115 km / s, it is much faster than the third cosmic speed (16.7 km / s) out of the solar system (the first cosmic speed of becoming an earth satellite is 7.9 km / s, the second cosmic speed of leaving the earth is 11.2 km / s), and flying out of the solar system So easy. If you want to explain, it can only be that heaven and everything is outside the solar system.

And for this, Wu Chengen has something to say:

"when I was writing the book, I just wanted this monkey to NB, but I didn't think about it that much."

Then we'll talk about nuclear fission. With regard to the nuclear in daily life, you need not panic. Until today, nuclear fission technology has been basically mastered by human beings. It is safe and efficient to use nuclear fission technology to release energy from heavy nuclei to generate electricity. Among these heavy ions, uranium-235 is the easiest to control.

Uranium-235is a radioisotope with 143neutrons in Uranium. It is the only isotope capable of controllable fission in nature. It is mainly used as nuclear fuel in nuclear reactions and is also one of the main raw materials for the manufacture of nuclear weapons.

The nuclear purity used in our daily nuclear power plants and reactors is very low (

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