Learn more about our help with Assignments: Astronomy
Search & Filtering
Astronomy | Astrophysics
are stars luminous
Astronomy | Astrophysics
At what distance from the earth is the gravitational pull of the sun equal to the gravitational pull of the earth?
Astronomy | Astrophysics
What would happen in the following scenarios. A at rest black hole of 3 solar masses, but with the moving mass of 1 million solar masses due to relativistic velocity, impacts an at rest black hole of 1 million solar masses.
1, a direct hit (if possible) where the 2 point masses merge
2. a near miss of the 2 point masses
3. the speeding black hole intersects the at rest black hole at the tangent of the event horizon of the at rest black hole.
It seems to me in cases 1 and 2,that once the moving black hole enters the event horizon of the large at rest black hole, it would start to shed all its mass once it hits the large at rest back hole's center or passes by it. Once a object enters the event horizon, it can't leave regardless of it's velocity. so as the moving black hole passess the other's center, it starts to loose velocity and mass. I would think this would generate a massive gravity pulse. Suddenly, the mass is shed and the gravity is reduced. But, i'm just a programmer and haven't got a clue.
1, a direct hit (if possible) where the 2 point masses merge
2. a near miss of the 2 point masses
3. the speeding black hole intersects the at rest black hole at the tangent of the event horizon of the at rest black hole.
It seems to me in cases 1 and 2,that once the moving black hole enters the event horizon of the large at rest black hole, it would start to shed all its mass once it hits the large at rest back hole's center or passes by it. Once a object enters the event horizon, it can't leave regardless of it's velocity. so as the moving black hole passess the other's center, it starts to loose velocity and mass. I would think this would generate a massive gravity pulse. Suddenly, the mass is shed and the gravity is reduced. But, i'm just a programmer and haven't got a clue.
Astronomy | Astrophysics
An airplane flies due south at 175km/h relative to the air. There is a wind blowing at 85 km/h to the east relative to the ground. What are the plane's speed and direction relative to the ground.
Astronomy | Astrophysics
What is the original distances for the Space shuttles Orbiting?
Astronomy | Astrophysics
we know that photons have their rest mass zero then why does they bend due to gravity of earth?
Astronomy | Astrophysics
I have a college astronomy lab due tomorrow by 3pm. Could I fax to you for price quote?
Astronomy | Astrophysics
Some neutrons were captured by protons to form deuterium nuclei. a. Find the mean time for neutron capture if the cross-section is 10^-28 cm62, the temperature is 10^9 K, and the baryon mass density is 2*10^-5 g/cm^3. Assume the proton to neutron ratio is 5:1, and that the mean time is given by the time for the neutron to travel one mean-free-path.
Astronomy | Astrophysics
In what direction (eastward or westward) across the celestial sphere do the planets normally appear to move as seen from Australia? In what direction is retrograde motion seen from there?
Astronomy | Astrophysics
If photons have zero mass, why are they subject to the gravitational force?
