Hello, can someone please answer these questions, I have 1 hour before this thing is due, please answer.

See explanation

Explanation:

2. Newton's law of universal gravitation states that every object in this universe is attracted to every other object, based on their mass and distance from each other. In the case of the Earth and Moon, for instance, since they are both very massive objects separated by a large distance, they have a gravitational pull strong enough to stay together but not strong enough to smash into each other.

3. Newton's first law of motion states that an object in motion will stay in motion, and that an object at rest will stay at rest unless acted upon by an outside force. If the court is flat and mostly frictionless, and the ball is already rolling with a certain velocity, then there is no reason for that ball to stop rolling from the point of view of this law.

4. Greater mass increases the attraction of gravity proportionally, while greater distance decreases the attraction exponentially. Therefore, a larger distance makes the force of gravity weaker than a mass expanding at a proportionally fast rate.

Hope this helps!

the density(ratio between mass and volume as m/v) decreases from top to bottom in periodic table group as the size increases and nuclear charge decreases. but in periods density increases from left to right as atom size decreases and nuclear charge increases.

if you mean hydrogen and oxygen then water is the product