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Balances work on the principle of levers, so if an item has no gravity, it won't work.
However, within the elastic limit of the spring dynamometer, the elastic force of the spring is proportional to the deformation (elongation or compression value) of the spring, and the elastic coefficient cannot be changed in space, and it can work (except for gravity).
To sum up, I think I choose A.
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There are a lot of space experiments that can be carried out.
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If I were in space, what would be the top three things I would want to do?
When I saw this topic, my first thought was: unlikely. And then I thought, why not, children can have this imagination, and so can I.
Well, if I go to space, the first thing I want to do is to take a good look at the earth, to see if this cute big blue ball that I live in every day is really as spectacular as it looks on TV, and then to see the whole earth, and then to find the map of China, and then to find the place where we live, and see how you feel.
The second thing is to take a good look at the universe, look at the planets, and compare them with each other. I will bring my mobile phone or camera to take pictures of the earth and the universe, **, and bring them back to the earth to my sons and daughters.
The third thing, go back to Earth. After satisfying my curiosity and amazement in space, I hope to return to the solid earth and my family as soon as possible.
It's nice to be down to earth!
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The purpose of the spacecraft to go to space is to investigate the effects of weightlessness on the human body, to conduct microgravity experiments, life science and biotechnology experiments.
1. Investigate the impact of weightlessness on the human body.
Astronauts in space can study the reaction ability of people in the process of space flight, how people can withstand the influence of gravity changes during take-off, orbital flight and return to the atmosphere, and study the conditions and equipment necessary for long-term survival in the space environment. Conducting this research will help to understand the impact of the space environment on the human body and to develop and utilize space resources for mankind.
2. Conduct microgravity experiments.
Since the realization of manned spaceflight, astronauts have studied the physical laws in the process of material processing under microgravity conditions in space, produced many new materials, and at the same time, the research on space material processing technology has also been developed rapidly.
3. Life science and biotechnology testing.
Astronauts have conducted a series of biological experiments in space, mainly biosphere studies on the study of biological matter, energy circulation and regulation. Gravimetric biology studies of the use of microgravity to facilitate life processes and how the microgravity environment affects the formation, function and behavior of organisms on Earth.
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1. In the spacecraft, sleeping standing is as comfortable as sleeping lying down. However, to get a good night's sleep, astronauts must tie themselves to their sleeping bags. Otherwise, if you turn over, you will drift somewhere else.
2. When drinking water, if you use an ordinary cup, even if the cup is turned upside down, the water will not flow down. Because in a spaceship, the water loses its weight. To get water, astronauts have to use a drinking bag with a straw.
3. Walking in a spaceship is more fun. A person who touches the cabin with a little force will float into the air, and a cough may take several steps back. In order to be able to walk smoothly, astronauts wear shoes with hooks on the soles of their shoes so that they can firmly hook the mesh floor.
4. Taking a shower in a spaceship is not an easy task, and the water sprayed from the nozzle is always floating in the air. In order to solve this problem, scientists made the shower room into a sealed bath barrel, or a sealed bath cover, and installed a straw under the shower room, which can suck the water sprayed by the nozzle in one direction. In addition, astronauts need to keep their feet fixed, otherwise they will have to turn their heels when the water rushes.
5. After sweating in the spacecraft or space station, the sweat will always adhere to the **, if it is exercising at this time, the sweat will be thrown from the ** to the instrument or float everywhere, so the astronaut will always wipe the sweat with a towel.
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Hello dear, there are many reasons to live in space, and here are a few of the main ones:1Explore the Universe:
Space is the main place to explore the universe. Scientists can study various celestial bodies in the universe such as planets, stars, and black holes in space to better understand the origin, evolution, and future fate of the universe. 2.
Develop new resources: There are many unknown resources in space, such as solar energy, water, natural gas, etc. These resources can be used to produce various items that are needed by humans, thereby improving the standard of living of humans.
3.Expand the territory of mankind: Living in space can also help humans expand their territory.
Humans can build permanent space bases in space and thus develop their own civilization and culture in space. In short, life in space can help mankind better understand the universe, exploit resources and expand territory. This is also the reason why many countries and organizations are actively exploring and developing space technology.
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