what prevented the gravity of the sun to pull all of the planets towards it

the size and shapes of the planets around the Sun

the large distance of the planets from the Sun

the sun's weak Gravity

the planets speed as they orbit the Sun

All of the above factors contribute to preventing the gravity of the Sun from pulling all the planets towards it. The size and shapes of the planets around the Sun, along with their large distance from the Sun, allow them to maintain their individual orbits around the Sun. Additionally, the Sun's gravity is strong enough to keep the planets in their orbits but not strong enough to cause them to fall into it. Furthermore, the planets' speed as they orbit the Sun provides the necessary centripetal force to balance the gravitational pull from the Sun.

answer

The correct answer is:

- the size and shapes of the planets around the Sun
- the large distance of the planets from the Sun
- the planets' speed as they orbit the Sun

just 1

The correct answer is: the large distance of the planets from the Sun.

which change in the Sun's gravity would occur if the Sun's mass were reduced by 1/2

it would be unchanged
it would be zero
it would be doubled
it would be halved

If the Sun's mass were reduced by 1/2, the change in the Sun's gravity would be that it would be halved.