Ninx napísal: 30 okt 2022, 21:03 Miliony ma sancu zarobit aj v IT, a znova sa tym snazis naznacit, ze je skorumpovany. Je to chalan, co ma 7 rocny pocitac a topanky z deichmannu, serie ho, ze nema cas, nie jachtu.

lukas9206 napísal: 31 okt 2022, 22:10 Bol by na "Zemi" život, aj keby bola veľká ako napríklad Jupiter?

starysomar napísal: 01 nov 2022, 10:50 Gravitácia by bol zrejme problém aj ak by rozsah teplôt životu vyhovoval.

Dreamer napísal: 01 nov 2022, 12:42 Su vobec taketo velke planety v pevnom stave a vhodnej vzdialenosti od hviezdy bezne? Ta vzdialenost je potrebna kvoli tomu, aby mohla byt voda v kvapalnom stave a atmosfera.

Dreamer napísal: 01 nov 2022, 12:42 Taktiez Jupiter vdaka svojej velkosti pritahuje rozne objekty z vesmiru, takze je bombardovany neustale, co tiez brani vzniku alebo udrzaniu prip. zivota.

An object that’s in hydrostatic equilibrium with Earth’s composition cannot reach the size of Jupiter. Gravity would pull anything with Earth’s composition into something smaller that 3 Earth radii, and at that point, the type of object we are talking about would likely be approaching gas giant class, with a hydrogen envelope, at which point it is no longer Earth composition.

But let’s imagine a hypothetical object that is not in hydrostatic equilibrium. For simplicity’s sake, lets also assume that our density gradient with radius is more or less the same as the Earth’s.

Jupiter has a density of 1326kg/m3 . The Earth has a bulk density of 5513kg/m3 , which is about 4.158 times the density of Jupiter. Therefor an object the density of the Earth and the size of Jupiter would be about 4.158 times the mass of Jupiter (or 1,318 Earth masses), and thus 4.158 times the gravitational acceleration at the surface of Jupiter’s cloud tops. Jupiter’s gravity is about 2.528g, which means the gravity of this Earth-density object would be about 10.510g at the surface, meaning over ten times the Earth’s surface gravity.

That being said, this is a simplified calculation for what you are asking, because we are completely neglecting the internal stresses of the planet, and this density is very unrealistic. Since we’re talking about a much much stronger gravitational pull and considerably larger mass, the interior of the planet would reach hydrostatic equilibrium at a much higher density, even with the same proportions of materials as the Earth. However, this is a difficult thing to estimate, since this type of object does not exist in nature, and even if it did, it wouldn’t stay that way for very long.

At masses exceeding ten Earth masses, planets will almost certainly become gas giants during formation, since they would be massive enough to capture a hydrogen/helium envelope, which drops the density.

ephramko napísal: 01 nov 2022, 22:58 Na tom našom Jupitere je asi 10x väčšia gravitácia ako u nás na Zemi a to už je dosť...

ephramko napísal: 01 nov 2022, 22:58 Keď dnes spomíname, takú kľúčovú vetu, ktorú si pamätám, tak to je ako mi dedko povedal, že mám šancu zažiť počas svojho života niečo veľké, čo ovplyvní celý svet a ľudstvo. A ja stále rozmýšlam, či myslel ufónov... Alebo či už to prišlo a tú zmenu sme si zatiaľ ani nevšimli. Čo myslíte vy?

• porno nebolo nikdy dostupnejsie ako teraz (rozvoj intrnetu a IT)

• Prezili sme celosvetovu pandemiu a planeta sa takmer zastavila.

• Tiktok a youtube skratil maximalnu dlzku pozornosti teengera na 15 sekund.