Kepler\'s Second Law is really a manifestation of what fundamental principle? Wh
ID: 2102778 • Letter: K
Question
Kepler's Second Law is really a manifestation of what fundamental principle?
What can you assume about the gravitational force from spherically symmetric bodies?
Why are large atronomoical objects spherical?
How does the speed of a satellite in circular orbit depend on the radius of the orbit?
What does eccentricity measure?
Why do planets orbit in a plane?
What does the book say is the difference between the weight of an object and the apparent weight?
What would you experience if you traveled to the event horizon of a block hole?
Explanation / Answer
1)copernicus principle
2)we can assume the spherical bodies as point mass
3)they are in molten state .so they look spherical
4)v=sqrt(2GMm/r)
5)we know that eccentricity=a/b
ratio of major axis to minor axis.
6)The orbits of the planets are coplanar because during the Solar System's formation, the planets formed out of a disk of dust which surrounded the Sun. Because that disk of dust was a disk, all in a plane, all of the planets formed in a plane as well.
7)weight of an object means its actual weight apparent weight depends on g and differs from place to place
8) event horizon is a boundary in space time beyond which events cannot affect an outside observer. Light emitted from beyond the horizon can never reach the observer.
experiences no strange effects and does, in fact, pass through the horizon in a finite amount of proper time
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