PHYA10H3 Chapter 13: Chapter 13 Notes

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crimsonwoodchuck49

14 Dec 2010

School

UTSC

Department

Physics and Astrophysics

Course

PHYA10H3

Professor

Johann Bayer

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Document Summary

Chapter 13: newton"s theory of gravity: the force of gravity is responsible for phenomena ranging from orbiting space shuttles, solar eclipses and the dynamics and the expansion of the universe. 13. 1 a little history: the study of the structure of the universe is called cosmology. Tycho and kepler: kepler"s work led him to find that the orbits are not circles but ellipses. 13. 3 newton"s law of gravity: newton proposed that every object in the universe attracts every other object with a force that is: The forces are directed along the straight line joining the two objects: the constant g is the gravitational constant and is proportionally constant necessary to relate the masse and measured in kilograms to the force in newton"s. G=6. 67x10^-11 nm2/kg2: the freefall acceleration given by newton"s second law is: The value of g at a height h above the erath is: with an independently determined value of g, the gravitational constant is different in nature.

Related Questions

Kepler found the orbits of planets are ellipses, not circles. True or False.

emeraldminnow377

The two laws that best explain how the planets are able to stay in orbit about the sun are _____.

(a) Kepler's 1st and 2nd laws of planetary motion
(b) Kepler's law of ellipses and Newton's law of inertia
(c) Newton's laws of gravity and inertia
(d) Newton's 2nd and 3rd laws of motion

brownelk926

Kepler's third law states that a planet's orbital period, p, isrelated to its average (semimajor axis) orbital distance, a,according to the mathematical relationship p^{2} = a^{3}. Which ofthe following statements describe a characteristic of the solarsystem that is explained by Kepler's third law?

a) Venus orbits the Sun faster than Earth orbits the Sun.
b) Inner planets orbit the Sun at higher speed thanouterplanets
c) The Sun is located slightly off-center from the middle ofeachplanet's orbit.
d) All the planets orbit the Sun in nearly the same plane
e) Earth is slightly closer to the Sun on one side of itsorbit thanon the other side
f) Pluto moves faster when it is closer to the Sun thanwhen it isfarther from the Sun

______________________________________________________________________________
2)Kepler's third law states that a planet's orbital period,p, isrelated to its average (semimajor axis) orbitaldistance, a,according to the mathematical relationshipp^{2} = a^{3}. Which ofthefollowing statements describe a characteristic of the solarsystemthat is explained by Kepler's third law?

Check all that apply

a) Venus orbits the Sun faster than Earth orbits the Sun.
b) Inner planets orbit the Sun at higher speed thanouterplanets
c) The Sun is located slightly off-center from the middle ofeachplanet's orbit.
d) All the planets orbit the Sun in nearly the same plane
e) Earth is slightly closer to the Sun on one side of itsorbit thanon the other side
f) Pluto moves faster when it is closer to the Sun thanwhen it isfarther from the Sun

PHYA10H3 Chapter 13: Chapter 13 Notes

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