Examples of using Surface gravity in English and their translations into Vietnamese
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Titan has a surface gravity of 0.138 g, slightly less than the Moon.
Kepler-452b has 5 times the mass of Earth and twice the surface gravity.
Their surface gravity is typically between 104 and 106 meters per second squared.
The resulting density would be 6.388 g/cm3, with a surface gravity acceleration of 12.05 m/s2.
Thus the surface gravity on IK Pegasi is over 900,000 times the gravitational force on the Earth.
This implies that this planet has a density of 96% that of water, and surface gravity 1.93 times that of Earth.
The surface gravity would be about the same or slightly higher than Earth's, so that a person could easily walk upright on the planet.
It has a radius of 1.121 R⊕, a mass of 1.02 M⊕,and about 81% Earth's surface gravity.
The surface gravity and temperature of the sonic black hole were measured, but no attempt was made to detect Hawking radiation.
TRAPPIST-1h has a radius of 0.773 R⊕, a mass of 0.331 M⊕,and about 56% Earth's surface gravity.
However, the limit also depends on the surface gravity of the planet, making heavy worlds somewhat more resistant to the runaway effect.[1].
The planet has a mass of 2.59 M⊕ and an extremely high density of about 8.9 g/cm3,[1]giving it about 91% more surface gravity than Earth.
If I try to express this surface gravity in terms of the density of the star(it's average density), I find M/r^2 is proportional to density times r.
This system usescertain diagnostic spectral lines to estimate the surface gravity of a star, hence determining its size relative to its mass.
The surface gravity of this relatively compact star is approximately 65 times greater than the gravity at Earth's surface(log g= 4.8 cgs), which is more than twice the surface gravity of our Sun.
The neutron star'scompactness also gives it very high surface gravity, 2×1011 to 3×1012 times stronger than that of Earth.
Lower surface gravity often indicates larger stars, and hence, higher luminosities.[8] In cooler stars, the width of observed oxygen lines, such as O I at 777.4 nm., can be used to calibrate directly against stellar luminosity.[9].
Extreme compression of matter inside it causes the high density,because it is likely composed mainly of hydrogen.[5] The surface gravity is also high, over 50 times that of Earth.[4].
The mass of the exoplanetis estimated to be 2.34 M⊕.[2] The surface gravity on Kepler-442b would be 30% stronger than that of Earth, assuming a rocky composition similar to that of Earth.[8].
However, thanks to its high density- a robust 5.427 g/cm3, which is just slightly lower than Earth's 5.514 g/cm3-Mercury has a surface gravity of 3.7 m/s², which is the equivalent of 0.38 g.
Because the density of mercury depends on temperature and surface gravity, both of which vary with local conditions, specific standard values for these two parameters were adopted.
Any more massive and Kepler-1625b would be a brown dwarf. Because of this high mass and radius,the planet likely has a very strong gravitational pull, with a surface gravity calculated to be up to 22.08 times that of Earth.
This classification isbased on spectral lines sensitive to stellar surface gravity which is related to luminosity, as opposed to the Harvard classification which is based on surface temperature.
This allows the formulation of the first law of black hole mechanics as an analogue of the first law of thermodynamics,with the mass acting as energy, the surface gravity as temperature and the area as entropy.
This implies that this planet has a density of 96% that of water, and surface gravity 1.93 times that of Earth.[3] A search for rings and satellites around this planet with the Spitzer space telescope was negative.
However, its metallicity is similar; this can be seen in how theconcentration of iron, or[Fe/H], is approximately 0.[1] WASP-13's surface gravity is measured at 4.04 km/s2, while the rate at which it rotates is at most 4.9 km/s.[2].
Values for the surface gravity, log(g), of O-class stars are around 3.6 cgs for giants and 3.9 for dwarfs.[11] For comparison, typical log(g) values for K class stars are 1.59(Aldebaran) and 4.37(α Centauri B), leaving plenty of scope to classify subgiants such as η Cephei with log(g) of 3.47.
Michell also suggested that futureastronomers might be able to identify the surface gravity of a distant star by seeing how far the star's light was shifted to the weaker end of the spectrum, a precursor of Einstein's 1911 gravity-shift argument.
With both the radius and mass of TRAPPIST-1e determined with low error margins,scientists could accurately calculate the planet's density, surface gravity, and composition. TRAPPIST-1e is unusual in its system as it is the only planet with a pure rock-iron composition, and the only one with a higher density than Earth(TRAPPIST-1c also appears to be just about entirely rock, but it has an extremely thick atmosphere that makes it less dense than TRAPPIST-1e).