Gravity

Gravity affects hydrogen the same way it does any other element. Hydrogen is lighter than air (nitrogen and oxygen) and therefor is buoyant in air, meaning it floats. No more differently than a piece of wood floats on water. There is no force counteracting gravity's force on the hydrogen, except that nitrogen and oxygen are pulled down to earth displacing the hydrogen. when the hydrogen reaches the outer layer of the atmosphere it will be held there by gravity until some other force (solar wind maybe) strips it away from the earth.

A strawberry is almost all water and therefore the specific gravity or density will be close to that of water. In fact, it is around 0.95 that of water so a strawberry will just float although it will be almost totally submerged.

When an object is pushed along an inclined plane to a height, its potential energy increases due to the change in height. This is because work is done against gravity to lift the object to a higher position. The object's kinetic energy may also change depending on how it was pushed and any friction present on the inclined plane.

It is always different depending on the object. For example a female humans' center of gravity is in the hip. as a male humans' center of gravity is in the chest. But once you have found the center of gravity in an object the center of gravity should be the same in every object like it.

I think it is Mars, but the question is incomplete.

Mars does have a surface gravity that's 37.7 percent of the Earth's.

The Earth's gravitational field and gravitational potential energy are really two quite different things. The relationalship is the following:

Gravitational potential energy = mass x gravity x height

Where gravity is the acceleration due to gravity - near Earth's surface, that's 9.8 meters/second2 - or the equivalent, weight per unit mass (which near Earth's surface is 9.8 newton/kilogram).

Gravity is the force that holds our Solar System together. It allows planets and moons to keep their elliptical orbits around the Sun. Even though humans have explored only a small portion of space, we know that our Solar System orbits the center of the much larger Milky Way galaxy. Without gravity, our Solar System would not be able to maintain this orbit.

F is force and it is equal to the gravitational constant times the mass of the first object times the mass of the second object divided by the distance between the two squared.

It acts at long distances.

The simplest and best answer to that question is:

-- Without gravity, there would be no orbits.

-- Once you completely understand gravity, you can figure out everything there is

to know about orbits, because it all comes from the behavior of gravity.

The sun gravity is stronger

There's no reason to suspect that there is such a thing as antigravity. As far as we know, all mass has the same "gravitational charge" (mass), and the force is always an attractive force, never a repulsive force. So, sorry, there's no such thing as antigravity.

An object on the moon's surface weighs 16.55% as much as the same object

weighs when it's on the Earth's surface. That's about 1/6 as much.

Approx. 4,0-4,1.

That means that it acts at a distance.

kmh

The specific gravity of water is unity. Anything with a specific gravity which is over unity will therefore sink in water.

Gravity pulls the star in and tries to squeeze it down to a point. Because it pulls all of the atoms of the star in to the middle, gravity speeds them up, giving them energy. Eventually gravity gives enough energy to the atoms that they move fast enough that when they collide, they sometimes stick together and nuclear fusion happens. This is what gives a star its light and what keeps a star from collapsing further.

microgravity

0.8

Newton prove gravity by means of an apple falling on his head

3*10^22N

The law of universal gravitation states every object in the universe attracts every other object, the attraction being proportional to the product of their masses and inversely proportional to the square of the distance between them.

Gravity is the attraction between masses. And since the moon has less mass than earth, the gravity is weaker there. Over a distance gravity is weaker.