Energy

How do the girls on the pole manage to spin at the same speed for so long? (what about friction?)

How do the girls on the pole manage to spin at the same speed for so long? (what about friction?)

Why, if you go down into the well in the afternoon, you can see the stars: how can this be scientifically explained and what does such a phenomenon look like?

Why, if you go down into the well in the afternoon, you can see the stars: how can this be scientifically explained and what does such a phenomenon look like?

Will the pain be stronger if after a stone weighing 10 tons, a stone weighing 100 is placed on my leg
tons? If we abstract from the fact that the leg can not stand it.?

Will the pain be stronger if after a stone weighing 10 tons, a stone weighing 100 is placed on my leg tons? If we abstract from the fact that the leg can not stand it.?

I went to the optometrist, now I need to put on glasses .. I want lenses, but the doctor didn’t allow them, saying that I don’t need them yet .... I am 13 (vision -1.5?

I went to the optometrist, now I need to put on glasses .. I want lenses, but the doctor didn’t allow them, saying that I don’t need them yet .... I am 13 (vision -1.5?

How much distance must be traveled to completely erase wheels on casters?

How much distance must be traveled to completely erase wheels on casters?

What would the world look like if the human retina perceived radiation from gamma to radio waves?

What would the world look like if the human retina perceived radiation from gamma to radio waves?

When will a person get wet faster in the rain, while running or walking?

When will a person get wet faster in the rain, while running or walking?

If you swallow the Apple AirPods, can you hear music from the stomach?

If you swallow the Apple AirPods, can you hear music from the stomach?

With what maximum speed can a person throw a stone or a ball with his hand? There is no information anywhere, but I'm very interested?

With what maximum speed can a person throw a stone or a ball with his hand? There is no information anywhere, but I'm very interested?

Why does a sharp change in lighting hurt your eyes? For example, when you leave a dark entrance and look at the snow

Why does a sharp change in lighting hurt your eyes? For example, when you leave a dark entrance and look at the snow

When going up stairs, do you spend more energy when you step on each step, or step "through one"?

When going up stairs, do you spend more energy when you step on each step, or step "through one"?

Astronomer Johannes Kepler wrote that he accurately calculated the date and time of his own conception. Is this technically possible?

Astronomer Johannes Kepler wrote that he accurately calculated the date and time of his own conception. Is this technically possible?

Is it true that a person will die if the frequency of the sound matches the frequency of the heartbeat?

Is it true that a person will die if the frequency of the sound matches the frequency of the heartbeat?

Why does water cool the skin?

Why does water cool the skin?

Can water microcrystals form in the skin when exposed to frost (-10 C)?

Can water microcrystals form in the skin when exposed to frost (-10 C)?

What will a person feel if he is in the center of the Earth?

What will a person feel if he is in the center of the Earth?

I stand on the scales with my hands in a lying position. They show 100kg. Why can I do 40 push-ups without lifting the same weight in the bench press so many times?

I stand on the scales with my hands in a lying position. They show 100kg. Why can I do 40 push-ups without lifting the same weight in the bench press so many times?

If the horizontal bar on which the person is hanging rises all the time, will it be more difficult for the person to pull up?

If the horizontal bar on which the person is hanging rises all the time, will it be more difficult for the person to pull up?

Can a person knock himself out?

Can a person knock himself out?

What will happen to my body if after death it is put in a plastic bag and air is pumped out?

What will happen to my body if after death it is put in a plastic bag and air is pumped out?

What is the maximum amount of time a person can be in a jump with Earth's gravity?

How to understand if the ultraviolet light passes through when choosing sunglasses?

How to understand if the ultraviolet light passes through when choosing sunglasses?

Is it harmful to talk on the phone with the mobile Internet on? And do technologies such as GPRS, EDGE, 3G, 4G greatly increase the radiation of the phone?

Is it harmful to talk on the phone with the mobile Internet on? And do technologies such as GPRS, EDGE, 3G, 4G greatly increase the radiation of the phone?

How is it that RGB combinations can simulate colors whose wavelengths are longer than the highest frequency G? How does color perception work?

How is it that RGB combinations can simulate colors whose wavelengths are longer than the highest frequency G? How does color perception work?

How does somersaults help when landing after a jump?

How does somersaults help when landing after a jump?

Is it really possible to climb to great heights through someone else's hair, like in Rapunzel?

Is it really possible to climb to great heights through someone else's hair, like in Rapunzel?

Does vortex medicine really cure almost all diseases?

Does vortex medicine really cure almost all diseases?

Can the observer observe what he is?

Can the observer observe what he is?

How often does it happen that an alternative person expresses an idea in science, but is ridiculed, insulted, advises to read textbooks, but in the end he turns out to be right?

How often does it happen that an alternative person expresses an idea in science, but is ridiculed, insulted, advises to read textbooks, but in the end he turns out to be right?

Light, in the form of photons, is converted into signals in the brain. How do these signals become the picture I see? What are they projected onto?

Light, in the form of photons, is converted into signals in the brain. How do these signals become the picture I see? What are they projected onto?

How to quickly knock out a 270 kg sumo wrestler who has taken up a good stable stance?

How to quickly knock out a 270 kg sumo wrestler who has taken up a good stable stance?

Can a person with a single eye understand the distance to an object if he sees this object for the first time?

Can a person with a single eye understand the distance to an object if he sees this object for the first time?

How to find out the exact weight of a limb without separating it from the body?

How to find out the exact weight of a limb without separating it from the body?

What will happen if you continuously engage in sports activities every day? Maybe there is some kind of excess?

What will happen if you continuously engage in sports activities every day? Maybe there is some kind of excess?

Do you think it makes sense in fitness clubs to connect generators to simulators and generate electricity? Is that so much work going to waste?

Do you think it makes sense in fitness clubs to connect generators to simulators and generate electricity? Is that so much work going to waste?

When a person smells a substance, does this mean that particles of this substance are now in the body?

When a person smells a substance, does this mean that particles of this substance are now in the body?

Why is it customary to depict a person in the form of a skeleton when electrocuted? Does this correspond to reality?

Why is it customary to depict a person in the form of a skeleton when electrocuted? Does this correspond to reality?

Is it possible that after falling into a black hole, a person will remain alive?

Is it possible that after falling into a black hole, a person will remain alive?

Is it true that man produces antimatter? If so, how?

Is it true that man produces antimatter? If so, how?

Why do cats look at one point for a long time, and then, as it were, follow with their eyes something?

Why do cats look at one point for a long time, and then, as it were, follow with their eyes something?

Does an explosive depressurization of the cabin at an altitude of 10,000 meters really cause a passenger to die without having time to get scared and feel pain?

Does an explosive depressurization of the cabin at an altitude of 10,000 meters really cause a passenger to die without having time to get scared and feel pain?

Why is acceleration not so felt when accelerating an airplane, compared to a car, for example?

Why is acceleration not so felt when accelerating an airplane, compared to a car, for example?

If you have to fall from 10+ meters, what's the best way to land?

If you have to fall from 10+ meters, what's the best way to land?

The question of the universe: is steam from your pants visible when you fart in the cold?

The question of the universe: is steam from your pants visible when you fart in the cold?

What awaits Formula 1 in the future, in what direction will it develop (after all, there is already Formula E in the electric direction)?

What awaits Formula 1 in the future, in what direction will it develop (after all, there is already Formula E in the electric direction)?

Can you keep warm with ice?

Can you keep warm with ice?

What is energetically more beneficial: shuffling or raising your legs? Does the cost of raising the legs overlap with the reduction in friction?

Can a person be killed with a drop of water?

Can a person be killed with a drop of water?

Do you feel that the frosty air smells a little of electricity in the morning? Is there an explanation for this?

Do you feel that the frosty air smells a little of electricity in the morning? Is there an explanation for this?

What difficulties and pitfalls can prevent a snowboarder, as opposed to a skier, from skiing at an altitude of more than 8000 meters?

What difficulties and pitfalls can prevent a snowboarder, as opposed to a skier, from skiing at an altitude of more than 8000 meters?

Why, when sneezing, a person makes a movement with his head forward, although according to the laws of inertia he must back, because exhales sharply?

Why, when sneezing, a person makes a movement with his head forward, although according to the laws of inertia he must back, because exhales sharply?

How to jump off a 10-meter ladder and not crash?

How to jump off a 10-meter ladder and not crash?

If you firmly squeeze the wire in your hand, will a breakdown occur and the person will die?

If you firmly squeeze the wire in your hand, will a breakdown occur and the person will die?

What should be the speed of the urine stream for a man to fall from recoil if the penis is located strictly parallel to the ground?

What should be the speed of the urine stream for a man to fall from recoil if the penis is located strictly parallel to the ground?

How to minimize the risk of injury when jumping from a great height?

How to minimize the risk of injury when jumping from a great height?

So what about microwaves, are they really bad for your health (due to radiation)?

So what about microwaves, are they really bad for your health (due to radiation)?

Why do I hear radiation from an old TV and this sound is unpleasant to me? At the same time, no one hears him?

Why do I hear radiation from an old TV and this sound is unpleasant to me? At the same time, no one hears him?

How does the pain of getting a tattoo compare?

How does the pain of getting a tattoo compare?

Let's say vampires are not fiction. How do they see in the dark?

Let's say vampires are not fiction. How do they see in the dark?

If the world champion in high jump jumps on the moon, will he be able to get out of the moon's gravity field into outer space?

If the world champion in high jump jumps on the moon, will he be able to get out of the moon's gravity field into outer space?

Is it true that you can break glass glasses with the power of an operatic voice, like in the movies?

Is it true that you can break glass glasses with the power of an operatic voice, like in the movies?

Why will a 40 liter barrel of water not be lifting, but a 50 kg girl like a fluff?

Why will a 40 liter barrel of water not be lifting, but a 50 kg girl like a fluff?

Can you become radioactive if you eat a banana every day?

Can you become radioactive if you eat a banana every day?

Can you sunbathe through the glass of a car?

Can you sunbathe through the glass of a car?

What happens if you pee on a bare wire?

What happens if you pee on a bare wire?