Gravity

The force pushing up is called the normal force. It acts perpendicular to the surface an object is resting on, counteracting the force of gravity.

It takes energy to go from one state to another.

Water ice, water vapor and liquid water can exist simultaneously, just as you can put an ice cube into boiling water and see the three phases coexist for at least a short time.

Gravity was not made by anybody, it is a natural force.

The force was discovered (understood) for the first time by Sir Isaac Newton and his description of it was then revised by Albert Einstein.

Gravity is the natural force of attraction between any two bodies, which is directly proportional to the product of their masses and inversely proportional to the square of the distance between them.

It is the "mass" of a body which always remains same, regardless of gravity.

Gravity is the force that attracts two bodies towards each other. It was formed due to the uneven distribution of mass in the universe, causing objects with mass to exert a gravitational pull on each other. This force of gravity keeps celestial bodies in orbit and governs the motion of objects on Earth.

The three factors of gravity are mass, distance between objects, and the universal gravitational constant. Gravity is stronger between objects with larger masses and closer distances, and weaker with smaller masses and larger distances.

A "Centrifugal" force is a fake force. For example, if a person were to be spun in a circle, that person would feel like there was a force pulling them away from the center. However, that is not the case. The mass of the person has inertia and tries to escape the circle in a direction tangent to the circle at the point they are at.

venus.

This is not a good answer. As it turns out Venus must assuredly has an atmosphere, though not at all like ours as it consists mostly of carbon dioxide and has an overall pressure at the surface 90 times that of Earth or roughly that of what a submarine encounters 1/2 mile below the surface.

The answer turns out to be more complicated than the question: it is a combination of a number of factors which determines whether a planet has an atmosphere. Mercury is both hot and light, and in close proximity to the sun's atmosphere stripping solar winds. These three factors contribute to an almost non-existent atmosphere. Even lowly Pluto, now demoted to a so-called trans-neptunian object, has more of an atmosphere than does Mercury.

Without gravity, it is doubtful that the universe as we know it would exist at all. At the very least, galaxies, stars and planets would be unable to form. Worse still, without stars there would be no heavy elements and it is unlikely that life would exist.

Movement energy is gradually wasted, that is, converted to other energy forms due to friction.

The group name for push gravity and friction is contact forces.

Water's property of cohesion, due to hydrogen bonding between water molecules, allows it to climb against gravity in plants through a process called capillary action. This allows water to be drawn up from the roots through the xylem vessels to the leaves and other parts of the plant.

Upside down loops are placed at the beginning of roller coasters to create excitement and build anticipation for riders. They provide a thrilling and intense experience right from the start, setting the tone for the rest of the ride.

The force of gravity between two objects decreases as the distance between them increases. The force of gravity increases as the mass of the objects increases. This relationship is described by Newton's law of universal gravitation.

A urinometer is an instrument used to measure the specific gravity of urine. It consists of a float that is placed in a tube filled with urine, and the specific gravity is read off a scale on the side of the tube.

No, an object does not have to be moving in order to have inertia. Inertia is the tendency of an object to resist changes in its state of motion, whether that be starting to move, stopping, or changing direction.

It takes no force to 'move' an object. There are trillions of objects that are moving right now

with no forces acting on them.

It only takes force to 'accelerate' an object ... to change its motion, by changing its speed

or the direction of its motion.

force=mass*acceleration

As mass increases, so does the force needed to change the object's motion.

The component of the applied force that is parallel to the displacement of the object is the only part that performs work on the object. This is because work is defined as force multiplied by the displacement in the direction of the force.

In a free body diagram of a coin balanced on its edge on a table, you would include the force of gravity acting downward on the coin, the normal force exerted by the table upward on the coin, and the force of friction between the coin and the table that prevents it from sliding.

The concept of wormholes is a theoretical topological feature of spacetime. It's possible construct is caused by two black holes or a black hole and a white hole. The wormhole itself is not a physical entity, just a name for the corridor between the two and thus cannot have any gravity.