Which of the following is the best definition of Newton's theory of universal gravitation?(1 point) Responses Every object attracts every other object in the universe, with a force that increases as the objects' masses increase and the distance between them decreases. Every object attracts every other object in the universe, with a force that increases as the objects' masses increase and the distance between them decreases. Every object attracts every other object in the universe, with a force that increases as the objects' masses decrease and the distance between them increases. Every object attracts every other object in the universe, with a force that increases as the objects' masses decrease and the distance between them increases. Every object is pulled downward with a force that increases as the height from which an object is dropped increases. Every object is pulled downward with a force that increases as the height from which an object is dropped increases. Every object is attracted to the Earth with a force that increases with increasing mass and distance.
Every object attracts every other object in the universe, with a force that increases as the objects' masses increase and the distance between them decreases.
Which statement summarizes Kepler's First Law of Planetary Motion?(1 point) Responses Planets closest to the sun move faster in their orbits than those farther away. Planets closest to the sun move faster in their orbits than those farther away. Planets revolve around the sun in elliptical orbits. Planets revolve around the sun in elliptical orbits. Planets move fastest while Earth is at perihelion. Planets move fastest while Earth is at perihelion. Planets in the solar system revolve around the sun.
Planets revolve around the sun in elliptical orbits.
How does Kepler’s third law compare the periods and orbital radii of two planets within a solar system?(1 point) Responses The square of the ratio of the periods equals the ratio of the radii. The square of the ratio of the periods equals the ratio of the radii. The square of the ratio of the periods equals the cube of the ratio of the radii. The square of the ratio of the periods equals the cube of the ratio of the radii. The cube of the ratio of the periods equals the square of the ratio of the radii. The cube of the ratio of the periods equals the square of the ratio of the radii. The ratio of the periods equals the square of the ratio of the radii.
The square of the ratio of the periods equals the cube of the ratio of the radii.
Where is the sun located on Earth’s elliptical orbit?(1 point) Responses at a focus at a focus at the aphelium at the aphelium at the center of the two foci at the center of the two foci at the perihelium
at the focus
Which statements about geocentric model and heliocentric model are true? Select the two correct answers.(1 point) Responses They both are models of the solar system. They both are models of the solar system. They both show the position of Earth relative to the Sun. They both show the position of Earth relative to the Sun. They both show Earth at the center of the solar system. They both show Earth at the center of the solar system. They both show the Sun at the center of the solar system.
They both are models of the solar system.
They both show Earth at the center of the solar system.