18.4 + 18.5 Keplars Laws And Satellites Flashcards
1
Q
What is Kepler’s 1st Law?
A
All planets move about the sun in elliptical orbits, having the sun as one of the focal points
2
Q
What is eccentricity?
A
How skinny the ellipse is
3
Q
What is Kepler’s 2nd Law?
A
(Equal time, equal area). The radius vector joining any planet to the sun sweeps out equal are in equal lengths of time.
(Conservation of angular momentum)
4
Q
What is Kepler’s 3rd Law?
A
The square of the orbital period T of a planet is directly proportional to the cube of it’s average distance r from the sun
5
Q
Derive the full expression for Kepler’s 3rd Law
A
6
Q
A
7
Q
What is a geostationary satellite?
A
A satellite that has a time period of exactly 24 hours. Only orbit the earth above the equator. (Constant orbital distance )
8
Q
A
9
Q
A
10
Q
A
