Question

select all the correct answers. after the big bang, atoms in gas clouds experienced a greater gravitational pull to each other than atoms in other regions of the universe. which two statements are scientific facts that explain this phenomenon? gravitational pull on an object decreases with a decrease in its temperature. as the density of an object increases, it becomes immune to gravitational force. gravitation between two objects increases when the distance between them decreases. gravity doesnt exist between objects that are less than one light - year apart. when the mass of an object increases, its gravitational pull also increases.

Explanation:

• For the statement "Gravitation between two objects increases when the distance between them decreases":
• According to Newton's law of universal gravitation \(F = G\frac{m_1m_2}{r^{2}}\), where \(F\) is the gravitational force, \(G\) is the gravitational constant, \(m_1\) and \(m_2\) are the masses of the two objects, and \(r\) is the distance between their centers of mass. As \(r\) decreases (while \(m_1\) and \(m_2\) are non - zero), the value of \(F\) increases. In gas clouds, atoms are closer to each other compared to atoms in more rarefied regions of the universe, so the gravitational pull between them is stronger.
• For the statement "When the mass of an object increases, its gravitational pull also increases":
• From Newton's law of universal gravitation \(F = G\frac{m_1m_2}{r^{2}}\), if we consider one atom as \(m_1\) and another as \(m_2\), when the "amount of matter" (mass) in a region (gas cloud) is higher (more atoms in a given volume, so effectively higher \(m_1\) and \(m_2\) in the formula for the interactions within the cloud), the gravitational forces between the atoms (objects) in that region will be stronger. The gas clouds have a relatively higher mass density (more mass per unit volume) compared to some other regions of the universe, so the gravitational pull among their atoms is greater.

Answer:

C. Gravitation between two objects increases when the distance between them decreases; E. When the mass of an object increases, its gravitational pull also increases.