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Astronomy | Astrophysics
what is the weight of a 236 kg object on the surface of venus if the radius of venus is 6,000 km and the mass of venus is a 4.87x10^24 kg?
Astronomy | Astrophysics
two 1000kg asteroids are located 10m apart in the asteroid belt. waht is the gravitional attraction between them. B) if the mass of the first astroid triples, how would the force change?. C) if the mass of the first asteroid triples and then distance reduced by half, what would the new force be?
Astronomy | Astrophysics
I understand that the mass of the earth distorts space by creating a "gravity" well and the moon orbits the earth as it is rotating about that depression created in space. How does that theory explain my personal experience of gravity (I jump up and I come down) on Earth. I'm not orbiting a depression of space created by a heavy object. It would seem that I experience gravity as Newton described it as an invisible force that attracts objects, the one with the largest mass has the largest attractive force, so I drop to earth as did the apple. Help
Astronomy | Astrophysics
In what way does gravity change with distance from Earth?
Astronomy | Astrophysics
What if someday the biggest black hole consumed absolutely everything into one singularity and it exploded. Would this basically "recycle" the entire universe?
Astronomy | Astrophysics
An 85kg person is on the moon (moon acceleration due to gravity is 1.6ms) Contrast the mass and weight of this person on the moon
Astronomy | Astrophysics
distant stars are luminous or non luminous source does they have their own light or not?
Astronomy | Astrophysics
Some black holes are theoretically formed from the death of a star. There is a black hole in the center of the Milky Way Galaxy. I know that there are two classes of black holes; small and massive. The smaller theoretically being formed from a death of a star and massive with multiple theories not one being a MASSIVE star. My question is, How big would a star have to be to make the galaxy?
Astronomy | Astrophysics
if the ice caps on the polar region of the earth melts how it will effect the duration of the day.
Astronomy | Astrophysics
The flux of visual (V-filter) radiation received at the Earth from the sun is approximately 170Js^-1m^2. Calculate the V-band luminosity in photons / second. Why is this different from the total luminosity of the sun?
