# All of the following statements are true. Which one can be explained by kepler’s third law?

## Which one can be explained by Kepler’s third law?

Kepler’s third law states that a planet’s orbital period, p, is related to its average (semimajor axis) orbital distance, a, according to the mathematical relationship p2=a3. … All the planets orbit the Sun in nearly the same plane. Earth is slightly closer to the Sun on one side of its orbit than on the other side.

## What are Kepler’s 3 Laws Why are they important?

Explanation: Kepler’s laws describe how planets (and asteroids and comets) orbit the sun. They can also be used to describe how moons orbit around a planet. But, they do not just apply to our solar system — they can be used to describe the orbits of any exoplanet around any star.

## What was Kepler’s third law quizlet?

Terms in this set (10)

Planets travel in elliptical orbits around the sun. … – This means that planets move faster when they are near the sun. Kepler’s 3rd law. Compares the orbits of 2 different planets.

## How is Kepler’s third law derived?

Kepler’s third law can be derived from Newton’s laws of motion and the universal law of gravitation. Set the force of gravity equal to the centripetal force. After substituting an expression for the velocity of the planet, one can obtain: GMr=4πr2P2 which can also be written P2=4π2a3GM.

## What does Kepler’s law mean?

1 : a statement in astronomy: the orbit of each planet is an ellipse that has the sun at one focus. 2 : a statement in astronomy: the radius vector from the sun to each planet generates equal orbital areas in equal times.

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## What is K in Kepler’s third law?

Kepler`s Third Law of Planetary Motion is written in the form of T^2 = k * R^3 where k is a constant. The value of this constant is equal to 4 * pi^2 / G * M where G = 6.67 x 10^-11 Nm^2/kg^2 and M is the mass of the orbited body such as the sun. The mass of the sun is 1.989 x 10^30 kg.

## What are some applications of Kepler’s laws still in use today?

to plot and time the positions of comets and asteroids as they orbit the Sunplotting a course out of the solar system to explore other planets similar to Earth. plot the orbit of moons or man-made space satellites. plotting a course to send a rocket to collect samples from the Sun.

## What are Kepler’s laws quizlet?

Terms in this set (17)

Planets move in ellipses with the Sun at one focus. Law of Equal Areas. An imaginary line between the Sun and a planet sweeps out equal amounts of area in equal amounts of time, & a planet moves the fastest when it is the closest to the Sun. Slower when they are far away from the Sun.

## Why do the planets orbit the sun in close to the same plane?

It’s thought to have arisen from an amorphous cloud of gas and dust in space. The original cloud was spinning, and this spin caused it to flatten out into a disk shape. The sun and planets are believed to have formed out of this disk, which is why, today, the planets still orbit in a single plane around our sun.

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## What does Kepler’s second law say?

In geometry: The world system. Kepler’s second law states that a planet moves in its ellipse so that the line between it and the Sun placed at a focus sweeps out equal areas in equal times.

## What is Kepler’s constant?

Kepler’s Constant is only a constant if the object being orbited stays the same. So, anything orbiting the sun has the same Kepler’s Constant, just like anything orbiting the Earth has the same Kepler’s Constant. The Sun and Earth Kepler’s Constants will be different from each other.

## What is Newton’s version of Kepler’s 3rd law?

Because for every action there is an equal and opposite reaction, Newton realized that in the planet-Sun system the planet does not orbit around a stationary Sun.