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Gravity

One of the four fundamental interactions, gravity is responsible for the fact that any objects with mass attract one another. According to general relativity, it is a space time curvature, but according to quantum mechanics it is the result of exchanges of virtual gravitons.

4,784 Questions

What creates gravity and how does it influence the movement of objects in space?

Gravity is a force that is created by the mass of an object. It influences the movement of objects in space by pulling them towards each other. The larger the mass of an object, the stronger its gravitational pull, causing objects to orbit around it or be attracted towards it.

What explanation does general relativity provide for gravity and how does it differ from classical theories of gravity?

General relativity explains gravity as the result of the curvature of spacetime caused by mass and energy. This differs from classical theories of gravity, such as Newton's law of universal gravitation, which describe gravity as a force acting between objects with mass.

What is the cause of gravity's existence?

Well, when the tree grows and leaves sprout, it feels so good to see them blossoming and reaching out towards the sun, doesn't it? Gravity, it's like that loving embrace that the Earth has for everything on it. It exists to bring everything close together, just like a warm hug on a cold day. Remember, just like how all the colors of the palette come together to create a beautiful painting, gravity holds all the pieces of our universe in harmony.

What makes gravity such a fundamental force in the universe?

Gravity is a fundamental force in the universe because it is responsible for the attraction between all objects with mass. This force causes objects to be pulled towards each other, keeping planets in orbit around stars and holding galaxies together. Gravity plays a key role in shaping the structure of the universe and governing the motion of celestial bodies.

What would happen if an asteroid encountered negative gravity in space?

If an asteroid encountered negative gravity in space, it would likely be repelled or pushed away from the source of the negative gravity. This could cause the asteroid to change its trajectory and move in a different direction than it was originally traveling.

What would happen to galaxies if gravity suddenly disappeared?

If gravity suddenly disappeared, galaxies would no longer be held together by the force that keeps them in their current shape and structure. Without gravity, galaxies would likely break apart and scatter into space, causing chaos and disruption to the entire universe.

Where are the places on Earth where gravity doesn't work?

Oh, isn't that a fascinating question! While gravity exists everywhere on Earth, the strength of gravity can vary in different places. For instance, in some scientific experiments conducted in special facilities, we can create settings where it appears that gravity is reduced or not very strong. It's all about the wonderful and mysterious ways in which nature works, isn't it?

Where does gravity come from and how does it affect the universe?

Oh, isn't gravity just like a dear old friend who's always there for us? It comes from the big old masses of matter in the universe, like planets and stars, gently pulling everything towards them. It's what keeps our feet on the ground and holds our beautiful universe together with a gentle hug. Just imagine the calm dance of planets and stars, guided by gravity in their cosmic ballet.

Why do photons, despite having no mass, still experience the effects of gravity?

Photons, despite having no mass, still experience the effects of gravity because they have energy and momentum, which are affected by gravitational fields according to the theory of general relativity.

Why do we experience gravity on Earth and in the universe?

We experience gravity on Earth and in the universe because of the mass of objects. Gravity is a force that pulls objects towards each other, and the more mass an object has, the stronger its gravitational pull. This is why we feel gravity pulling us towards the Earth and why planets orbit around the sun.

Why does Earth have gravity and how does it affect the objects on its surface?

Earth has gravity because of its mass, which creates a force that pulls objects towards its center. This force affects objects on the surface by keeping them grounded and causing them to fall towards the ground when released. Gravity also determines the weight of objects on Earth, as it pulls them towards the center of the planet.

Why does gravity happen and what are its effects on the universe?

Gravity is a fundamental force in the universe that causes objects with mass to be attracted to each other. It is a result of the curvature of spacetime caused by mass. Gravity affects the motion of celestial bodies, keeping planets in orbit around stars and galaxies together. It also plays a key role in the formation of stars, galaxies, and the overall structure of the universe.

Why does light, which is massless, still experience the effects of gravity?

Light, despite being massless, experiences the effects of gravity because gravity affects all forms of energy, including light. Gravity bends the path of light, causing it to be attracted towards massive objects like stars and planets. This phenomenon is known as gravitational lensing.

If the earth's gravity is pulling on you are you pulling on the earth?

YES!!!

There is a gravitational attraction between any two bodies/masses.

However because your mass is so small compared to the Earth's mass we only feel that attraction as a one - way force.

It has been calculated that two emptysuper=tankers (100,000 tons each) moored alongside each other, with 3 to 4 feet of fender distance betwen, has a gravitational attraction of 1 lb(pound).

Sir Isaac Newton, who gave up the Laws of Universal Dynamics (gravity) , when the apple fell on his head, perceived that not only did the apple fall to Earth, but the Earth , infinitesimally, fell towards the apple.

What makes science so important?

Science is important because it helps us understand the world around us, make informed decisions, and solve complex problems. It also drives innovation and technological advancements that improve our quality of life. Additionally, scientific research contributes to our understanding of natural phenomena and the universe.

What does gravity have to do with tornadoes?

Air masses of low density tend to rise because they are less strongly affected by gravity than cool air masses. Rising warm air masses is the primary cause of convection on earth. Thunderstorms are a product of convection. Tornadoes are a product of thunderstorms.

Where the sun gets its gravity?

Gravitational force is a property of mass. Wherever there's mass, there will be

force between it and any other mass. The more mass there is, the greater the

forces will be between it and any other mass. The sun has quite a bit of mass ...

something like 1,989,000,000,000,000,000,000,000,000,000 kilograms of it,

compared to about 84 kilograms in me ... so you can expect quite a bit of force

between the sun and any other mass within a few billion miles of it.

How fast must an object go to leave a planets gravity?

The speed that ab object must travel at to escape a planet's gravity is called escape velocity. This value varies depending on the mass and diameter of the planet. Here are the escape volcities of the eight planets of our solar system.

Mercury: 9,400 mph

Venus: 23,000 mph

Earth: 25,000 mph

Mars: 11,000 mph

Jupiter: 133,000 mph

Saturn: 77,000 mph

Uranus: 48,000 mph

Neptune: 53,000 mph

Note that escape velocity only takes gravity into account and ignores other forces. An object launched from Earth's surface or from any other planet with a substantial atmosphere at escape velocity would be quickly destroyed and slowed down by air resistance.

What important star is in the gravity?

The most important star in terms of gravitational influence on our solar system is the Sun. Its gravitational pull keeps the planets in orbit around it. Additionally, the interactions between stars in a galaxy are primarily driven by their gravitational forces.

When do you see gravity in action?

Gravity is always in action, pulling objects towards each other. We see gravity in action when we drop something and it falls to the ground, when the planets orbit around the sun, and when we jump and come back down to the Earth.

Does Kepler 22-b have gravity?

Yes, Kepler-22b has gravity. Gravity is present on all celestial bodies with mass, including exoplanets like Kepler-22b. The gravity on Kepler-22b would be weaker than Earth's due to its larger size and lower density.

What is the meaning of zero air void?

Zero air void means that the material is completely compacted with no air voids present. This is often desired in construction applications to ensure maximum density and strength of the material. Achieving zero air void can improve the material's durability and performance characteristics.

How does gravity keep objects in motion around the sun?

Gravity, per say, doesn't. It's only a player in the game. With only gravity, things would slowly be sucked into the sun, like a black hole. So that's where the other team, inertia comes in. Inertia is Newton's first law of motion, stating that an object in motion will continue to stay in motion unless another outside force messes with it.

And so we have two major forces, gravity and inertia, pushing on one another. Neither win, and as gravity wants to pull into itself and inertia wants to fly away in a straight line, we get a circular path for the object that most call, an orbit.

Does the sun have less gravity than the moon?

No.

Gravity is a function of mass, and the sun's mass is about 27,000,000 times the mass of the moon.

What is the earth's centripetal force?

The term "centrifical" is a word without a definition; some would say a non-existent word. It might have the same definition as "ncauvjnscc" or "oioushc" or any other made up babble you chose to imagine. However, the term has been used enough in common parlance as to associate its meaning with either "centripetal" or "centrifugal".

The centripetal force is the force applied to a linearly travelling (straight line) object to make it travel in a curve or to make it rotate about some center point. The force is applied to the object make it move toward that center point.

The centrifugal force is referred to as the opposite force to the centripetal force following Newtons Law of equal and opposite reaction. However, this force is a consequence of the inertia of the object (resistance to the circular motion) and acts on the source of the centripetal force, NOT the object experiencing curved motion.

The centrifugal force is equal, but opposite, the centripetal force.

For instance, a weight on a string attached to an object swung about your head experiences a force applied inward (centripetal force) due to your hand (the center point) applying the force. The string also experiences this force all along its length. Your hand experiences a force applied outward (centrifugal force) due to the weights inertia (resistance to change direction at all points in time as it moves in a circle). The string also experiences this force all along the string. The opposing forces on the string keeps the string in tension. Additionally, your feet share a friction force against the surface you stand on equal to the centripetal force to keep you stationary.

So the question remains: which force did you really mean, centripetal or centrifugal?