Some people say that the density of people is similar to that of water, so they can float on the wat

Only things with less density can be suspended over things with high density. People don't know how to swim because of density.

Spring is often in the four seasons of the year, thousands of purples and thousands of reds bloom forever, welcome the new year, spring rain silky all things, red plums dotted embroidered thousands of mountains, full of spring.

There are many possibilities.

The most common one is to struggle in a disorder, causing oneself to sink instead.

There is also the density of clothes on the body.

In addition, it may be that the aquatic plants are entangled.

The density of a person is very close to that of water, so if you breathe in air, you will basically float, but if you exhale all your breath, it is very likely to sink, and I can sink to the bottom anyway.

So, don't be nervous after falling overboard!!

Living people generally can't float. (except after inhalation).

But the fat and thin body shape of people has a great impact.

People who are very fat can float on the surface of the water because the fat density is very small and the buoyancy is very large.

However, ordinary people will sink into the water, and only after drowning, the body will ferment, decay and produce gas, and then swell and float. Therefore, it is generally found that the corpses are floating up after several days of death, and they can only be salvaged after they have just died.

First of all, the density of the human body is uneven, the density of the limbs is large, and the chest cavity and abdominal cavity are dense.

On average, the density of the human body is slightly less than the density of water, so people can float in still water, such as accidentally falling into the water, they can lie flat and let themselves float. However, in practice, due to the flow of water and the difference in the physique of the human body, it is difficult for ordinary people to maintain balance in the water, and often the feet sink first and then the whole body sinks. The submarine is believed to know it, its shell is made of steel, and the density is more than ten times greater than that of water, but because it is a cavity structure, it can adjust the height of the submarine in the ocean by controlling the storage capacity of water, and similarly, experienced people, when swimming, can control the gas content in the body cavity to make themselves float, I hope the above will help you

1. If you are a fat man, you will definitely float up if you don't move in the water.

2. If it is a thin person, the time to float up will not be longer than that of a fat person, and it will sink.

Because the muscles sink in the water, the fat floats up.

First of all, to correct you a mistake, density similarity is called levitation, not floating.

Also, I think your question depends on the person, but a friend of mine is super fat, and he has a lot of fat, and he can float.

My opinion:

Theoretically, the density of a person is similar to that of water. However, if you are large enough, it will still become flooded.

It feels like the bones and muscles of the human body are much denser than water. So in general, people are going to sink after entering the water. For example, the body of a fish is also mainly sunk in the water.

When a person's lungs are filled with air, they can float slightly like a fish bladder. Fish can be anywhere in the water, just because the swim bladder occupies much more than the alveoli of a person.

I can only say that it has to do with the buoyancy area of the body and the average density of the human body. Even if you can swim, as long as your body is vertical, the surface of the water will definitely sink.

Iodine is lost more quickly in high-temperature environments.

This is what happens like a needle and a piece of iron of equal quality in water ... It has to do with the contact surface of the water.

Hope it helps.

I really thank the big brother upstairs, what does it mean to have something to do with the area that the water comes into contact with? What is buoyancy equal? Didn't you learn Archimedes' theorem well?

Get your head out of the water! Then the volume of drainage is reduced, and the buoyancy is relatively reduced, so it will sink. When the mass of the body that rises above the surface of the water is in balance with the buoyancy and the mass of the body under the earth's gravity, the rise and sink will stop, forming a levitation.

If it's your face that's coming out of the water, you'll be able to breathe. In addition, if it is not a static water, the surface water flow and the undercurrent will break the balance of forces, so the phenomenon of sinking will occur. In addition, the wearing density on the body is high, so it is easier to sink.

Anyone who can swim will feel this way: you will not sink for a long time after you relax on your own during the backstroke, and as long as you lie flat, you will slow down the sinking time. I think it has something to do with the area of the body in contact with the water, don't you think?

I think there are skills in swimming, and once you master it, you will be able to do it, and it has little to do with other things. I have a classmate who can swim at 94kg, and I can swim at 61kg, and he and I are both about 180cm.

It's not about the density of people, it's about the density of muscles! Human muscle density is less than water, and the lungs will only float after inhaling!

Just hold your breath in your stomach. Don't throw up. not float up.