Which are features of Copernicus's model of the solar system? Select the three correct answers.

1. The greater the distance, the slower the orbital velocity

2. The amount of the gravitational force doubles
3. An ellipse that is almost circular
4. 0.57
5. The asteroid spirals into the sun, The asteroid continues out of the solar system, The asteroid enters a stable elliptical orbit around the sun
6. The planets move in perfect circles, The Sun is at the center, The stars are fixed to an outer sphere
7. √5v
8. The distance to the sun varies
10. The time required to sweep out the areas
11. It explains why Mars appears to move backward for a few months approximately every two years, It shows the Sun at the center of the solar system
12. T^2=r^3
14. Gravitational force increases as the mass of objects increases, The theory applies to all objects in the universe, Gravitational force increases as the distance between objects decreases
100% for multiple choice questions essays are all you

All of these are correct besides #7 the answer for that one is 1/√5 v

Oh also they aren't in order, it is different for everyone

To determine the correct answers regarding the features of Copernicus's model of the solar system, we need to consider the key characteristics of his model. Here are the potential features:

1. Heliocentric System: One of the key features of Copernicus's model was the introduction of the heliocentric system. This means that Copernicus proposed that the Sun, rather than the Earth, is at the center of the solar system, with the planets orbiting around it.

2. Planetary Orbital Paths: Copernicus's model suggested that the planets orbit the Sun in circular paths known as orbits. These orbits were thought to be uniform and symmetrical.

3. Retrograde Motion Explained: Copernicus's model explained the phenomenon of retrograde motion, which is the apparent backward movement of planets in the night sky. It was believed that this occurs because the Earth, in its own orbit, overtakes and passes other planets, causing them to appear to move backward briefly.

To determine the three correct features, we need to verify which ones are supported by Copernicus's model. You can consult reliable sources such as textbooks, astronomy books, or academic resources on the history of astronomy to cross-reference the features listed above with Copernicus's model.