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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

Does gravity effect the flying of a kite?

Yes, gravity affects the flying of a kite by pulling it downward. The tension in the kite string counteracts this force, allowing the kite to remain aloft. The angle of the kite and the wind also play a role in keeping the kite flying.

Is gravity responsible for phases of the moon?

Yes, The force of gravity is responsible for the orbiting motion of the moon about the earth and also the motion of both the moon and earth around the sun. The orbital patterns of the earth and moon cause their positions to be relative to the sun in a way that repeats itself every 29 days - a full phase. The light that bounces off the moon and back to someone on earth depends upon the position of both, relative to the sun. So since gravity causes the pattern of the orbits then it is responsible for the phenomenon.

Which has greater specific gravity 100ml of urine or 100ml of water?

Specific gravity is a characteristic of a substance. The size of the sample is irrelevant.

The normal specific gravity of urine in healthy individuals ranges from 1.003 to 1.03 .

The specific gravity of pure water is 1.00 .

What is the acceleration due to gravity if an object falls down from a height of 25 m?

The acceleration due to gravity is approximately 9.81 m/s^2 on Earth. When an object falls from a height of 25 m, it will experience this gravitational acceleration as it accelerates towards the ground.

Does gravity help peristalsis?

Gravity does not directly help peristalsis, which is the involuntary contraction and relaxation of muscles that helps move food through the digestive tract. Peristalsis is controlled by the enteric nervous system in the gastrointestinal tract. Gravity can slightly assist in moving food down the esophagus when swallowing, but peristalsis is the main force that propels food through the digestive system.

What is chalcopyrite's specific gravity?

according to Geology.com the specific gravity of Chalcopyrite's is 4.1 -4.3.

Why is gravity considered as a non contact force?

Because you don't have to be in contact with the Earth in order to be

gravitationally attracted toward it. Just being anywhere near it is good

enough.

In fact, just being is good enough.

How is gravity similar to electic and magnetic forces?

Gravity, electric, and magnetic forces are all fundamental forces of nature that act over a distance and follow an inverse square law. They can be attractive or repulsive based on the charges or masses involved. However, gravity is always attractive, while electric and magnetic forces can be either attractive or repulsive.

Why is the force of gravity in a nebula very weak?

Gravitational force is dependent directly on the mass of the object and inversely dependent on the distance. So with the mass of the nucleus being so small, the gravitation al force is also very weak.

How does the Nikola Tesla's anti-gravity machine work?

The "Dynamic Theory of Gravity" was one of two Teslas's discoveries, which he worked out in all details in the years 1893 and 1894. More complete statements concerning these discoveries can only be gleaned from scattered and sparse sources because the papers of Tesla are concealed in government vaults for national security reasons. These papers are located at the "National Security Research Center" now the "Robert J. Oppenheimer Research Center". These discoveries are denied access because they were classified, even though plans for the hydrogen bomb are on an open shelf and could be seen and copied.

How does gravity affect a baseball hit into the air?

When you hit a ball off a tee or hit one that's pitched to you, you are changing its momentum. In the first case, the ball has zero momentum before you hit and only a little more when you nip it and it dribbles a few away from you while everyone watching laughs. In the latter case, the thrown ball has positive momentum that the pitcher gave it, and hitting it changes that momentum from positive to negative, assuming you don't foul it straight back. (Momentum is a vector quantity, you see.) Changing an object's momentum requires you to do work on it, which requires energy. The greater the change in momentum, the more energy is required. But momentum depends upon mass as well as velocity. In other words, if two objects are going the same speed, the more massive object has greater momentum, which is why it's better to get hit in the head with a ping-pong ball dropped from three feet than a bowling ball dropped from three inches. So, a more massive -- that is, heavier -- ball will not go as far if you hit it with the same amount of energy with which you hit a lighter one.

Which statement is true of the relationship between distance and gravity?

The force of gravity weakens as distance between objects increases. This is described by the inverse square law, which states that gravity decreases as the distance between two objects squared.

What falls faster a hardcover book or an pencil?

If they're both dropped from the same place at the same time, and fall through

a region without air, then they both experience the same acceleration, and hit

the ground with the same speed at the same time. If they have to fall through

air, water, molasses, etc., then the fluid probably slows the book more than it

slows the pencil.

How does gravity keep objects in motion?

Gravity is a force that pulls objects towards each other. When an object is in motion, gravity acts as a constant force that keeps pulling it back towards the center of mass of the larger object, such as the Earth. This continuous pull of gravity helps to maintain the object's motion in its orbit or trajectory.

Does percolation work against gravity?

Percolation typically occurs in the direction of gravity, as water or other fluids flow downward through a porous medium due to the force of gravity. Gravity helps to pull the liquid through the tiny spaces in the medium, allowing it to percolate through the material.

What are the steps to solving what is the force on a 1-kg ball that is falling freely due to the pull of gravity?

-- Recall Newton's Second Law of Motion: F = (M) x (A)

-- Say it in words: "The Force on a ball is equal to the mass of the ball multiplied by its acceleration."

-- Look up the acceleration of gravity. It's 9.8 meters per second2 .

-- Put the mass and the acceleration into the formula :

F = (1) x (9.8) = 9.8 newtons .

Notice that this is also the "weight" of the ball.

Does gravity exists in free space?

Yes. Gravity from everything exists everywhere. The moon circles the earth because of gravity. And the same with our earth around our sun. And same with our solar system around our galaxy. Every single thing in our universe has a gravitational pull on everything else.

What is the specific gravity of orange juice concentrate?

The specific gravity of orange juice concentrate typically ranges from 1.25 to 1.40. It can vary depending on factors such as sugar content and processing methods.

Does all mass has gravity?

Yes, all mass exerts a gravitational force on other objects. The strength of the gravitational force is directly related to the mass of the object - the more mass an object has, the stronger its gravitational pull.

Would gravity not exist without weight?

Gravity exists regardless of weight, as it is a force of attraction between objects with mass. Weight, on the other hand, is the force with which an object is pulled by gravity, and it depends on the mass of the object and the strength of the gravitational field it is in. So, gravity would still exist even if weight did not.

What is the force of gravity affecting a basketball?

The force of gravity acting on a basketball is approximately 9.8 m/s^2, which is the acceleration due to gravity on Earth. This force causes the basketball to fall towards the ground when it is in the air and provides the weight of the basketball when it is at rest on the ground.

What are the factors that altered the periodic time for a pendulum?

Factors that can alter the periodic time for a pendulum include the length of the pendulum arm, the acceleration due to gravity, the angle at which the pendulum is released, and air resistance. Furthermore, the mass of the pendulum bob and any external force applied can also affect the periodic time.

What is Ganymede's acceleration due to gravity?

Ganymede's acceleration due to gravity is 1.428 m/s².

What would happen to buoyancy in 0 gravity?

In zero gravity, buoyancy would not be present as there is no gravity to create the force that causes objects to float in a fluid. Objects would not experience an apparent weight loss or loss of buoyancy in zero gravity.