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Gravity

Parent Category: Physics
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.
The specific gravity for water is 1. . However, when the temperature of water increases, the gravitygradually lowers. At 0°C (32°F), gravity is 1. At 100°C (212°F),the specific gravity of water is 0.958. At 300°C (approx. 580°F),it is 0.7.
Gravitation follows an inverse square law, so a gravitational fieldwhile eventually small enough to be negligible will never benon-existent.
There is indeed a relationship between gravityand atmospheric pressure. Gravity attracts matter with mass, inthis case gas. The atmosphere being a layer of gas, the strongerthe gravity, the higher it's pressure. I if you seal gas in a tank, and increase its mass (by adding moregas) the pressure will...
The ease with which an object can be balanced depends greatly onthe location of its center of gravity. In this video segmentadapted from ZOOM , two cast members experiment with various designs in aneffort to balance a pencil on its tip. Their solution lowers thepencil's center of gravity, making...
I think you mean a pen. A pen isn't able to be used in zero gravitybecause the ink needs to move to the ballpoint where the ink exits.Thus, pens need the ink to flow to the tip of the pen so it comesout the ball roller, which without gravity won't work as well.
The attraction of the earth on the thrown object is called 'Gravitational attraction' or 'gravity' , and the change in velocity of the object , as the result of this attraction , is known as 'Acceleration due to gravity'
Because the slopes are sliding it is easy for gravity forpulling...
From what I've heard I'm pretty sure the rotation is the thing holding us to the ground.
yes. gravity is the force of one object attracting another
Gravitational Force increases with increase in mass but theacceleration due to gravity remains the same irrespective of themass i.e. 9.8m/s 2
There is Inertia with newtons law that an object in motion stays in motion. There is gravity holding it down. If the object is at rest, there is no force acting upon it. Force = mass x acceleration (F=ma). Inertia is not a Force, and the net gravitional Force is zero because the downward...
it does, but they flap their wings to lift them up
The basic answer is "weight", which = mass x acceleration due togravity. The mass of an object stays constant.
The attraction between two objects is: G x m1 x m2 / distancesquared where m1 and m2 are the two masses involved, and G is thegravitational constant - approximately 6.674 x 10 to the power -11,in SI units.
By contributing to innovations in the Quantum Theory
Yes. But different value of gravity. It is nearly close to 0.
"Gravity is a distortion in the Space-Time Continuum" -AlbertEinstein...
Gravity is a force measured in Newton's (N)
gravity, it is the force that pulls everything towards the centre of the earth.
On Earth, it is 9.8 m/s²
Gravity will exert a pulling force on an object.
OK, if the mass is small and close to the surface of the Earth,then the force of gravity is a constant downward. Two more similarsized objects show a (1/distance) squared relationship that isproportional to each mass.
Yes. Gravity is a property of mass.
Rather than Gravity , it is Electromagnetic forces which areholding all atoms together and giving the shape of material bodies
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Gravity is a field or a force, and, hence, has little to do withspeed.
you can see the presence of gravity all around as that is what holds us to the earth and gives us weight.
Well, back when the first human was around, I don't think there were any countries. However, Gnarl Tukee of the Gnishmash clan I believe discovered it a few seconds before he fell to his death.
yes it effects and gravitational pull is inversely proportional to the square of distance between two objects: G = gm 1 m 2 /r 2
No, unless they are near a body with enough mass to havegravitational pull. For example, standing on the moon they wouldfeel gravity (although it's a lot less than Earth's gravity ) butfloating in space technically there is still gravity but it is sucha small force that an astronaut would not feel...
It does nothing. Actually there is gravity because of earth. The earth (or any mass) pulls down (ie attracts ) everything towards itself according to Newton's Universal Gravitational Law which states that the force between two masses is directly propotional to the product of their masses and...
No, the moon would not stop moving. It would instead drift away from the Earth, due to the gravitational pull of other bodies.
Gravity affects the bounce of a basketball because if there is gravity, the basketball will come back down after it bounces. But if there is no gravity, the basketball will bounce and travel indefinitely upwards and never come back down until a gravitational force pulls the basketball towards it.
Gravity is the characteristic of time and space that causes the pair of equal forces that attract the Earth and anything on it toward each others' centers. Interestingly enough, the exact same thing also happens on other planets as well.
It is the universal force of attraction that acts between all bodies that have mass. Though it is the weakest of the four known forces, it shapes the structure and evolution of stars, galaxies, and the entire universe. The laws of gravity describe the trajectories of bodies in the solar system...
Throughout your everyday life, any time that you move, your speedthat you move at is lessened by inertia. This also holds true togravity; if you were to trip, without inertia you would accelerateinto the ground quickly and likely hurt yourself. The property ofinertia is invariably important to the...
Because the force of gravity is diluted by distance. We are far enough from the Sun that it can't just pull you off the Earth.
Normal force is opposite to gravity, something that could resist the force of gravity. A bit more detail: Assuming that you are referring to the Newton's third law of motion by mentioning "the reaction force", then the reaction force to gravity, on Earth or otherwise, is gravity itself . The...
No. Those are two quite different forces. The Earth's gravity is caused by the amount of mass Earth has.\n No. Those are two quite different forces. The Earth's gravity is caused by the amount of mass Earth has.\n No. Those are two quite different forces. The Earth's gravity is caused by the...
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Due to evolution, most species would become smaller, so they could move properly if the gravitation rised, and got bigger, if the gravitation falled.
no, but the electromagnetic field of the earth does.
Well on earth everywhere this is gravity. but once you leave earth there is no more gravity ----------------------------------------------------------------------------------------------- No, gravity is present through out all space. When you leave the Earth and go into orbit round it, it APPEARS...
This does seem odd. Mars, with a mass that is about twice the mass of Mercury, has about the same surface gravity. Mars' mass is about .107 the mass of earth, and the mass of Mercury is about .055 the mass of earth. The surface gravity on Mars is about .38 times the surface gravity of earth, and the...
9.8 newtons/kilogram. In other words, an object with a mass of 1 kilogram will weigh 9.8 newtons, an object with twice that mass will have twice the weight, etc. The force of gravity is often expressed as an acceleration - 9.8 meters/second 2 . This is equivalent to newtons/kilogram. 9.8 newtons...
Though weight is effected by gravity, mass is not affected by gravity. Actually mass is affected by gravity. Although the amount of mass is not affected by gravity, mass itself is.
Weight is the force of gravity between the earth and any object on it, and the object's weight is completely determined by the laws of gravity.
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The Moon's gravitational pull causes tides.\n \nThese is essentially a bulge in the ocean in the area closest to the moon, and on the opposite side of the planet. And, a lowering of the ocean on the parts 90 degrees ahead and behind the moon.\n \nThus, it all averages out, there isn't a net "rise...
From memory the gravity is around 3.7ms-2
Gravity exists because the Earth has mass. If the Earth wasmassless, gravity would not exist and people would freely floataway into space. Acceleration due to gravity is always -9.81 m/s^2on Earth.
Gravity wasn't invented. It is a force of nature and has always existed. As for its discovery it was known to the early humans that things tend to fall down. As for theories of gravity the first big milestone was Newtonian gravity created by Isaac Newton in 1687. The second, and the most accurate...
No one has yet figured out how to counter-act gravity.
The force exerted by the earth's gravity on an object on its surface is approx (9.8) x mass of the object) newtons. Acceleration due to gravity is 9.8 m/s 2 and force = mass times acceleration (Newton's Law). The reason I say approximately is that the earth is not perfectly spherical, meaning...
It's an older term; nowadays the phrase "Center of mass" seems tobe preferred. It's, basically, the mass-weighted center of a ...well, a thing . The center of a sphere of uniform densityis easy to calculate; it's the geometric center of the sphere. Forother shapes or for objects where the density...
Gravity has no effect on the mass of an object. However, an object's weight is the measurement of gravitational force on the object. The gravitational force on the moon for example is ~ 1/6 of that on Earth. A 300 kg object would weigh 3000N (Newtons) on the Earth but only weigh 500 N on the Moon...
If the solar system did not have gravity then it would have never formed.
Every speck of mass in the Universe 'has gravity'. That includes every planet, comet, asteroid, meteoroid, moon, artificial satellite, space ship, star, grain of dust, person, car, dog, dish, shoe, goldfish, doorknob, rock, computer, soda can, cellphone, and the lint in every pocket. Every one...
I suppose you mean "gravity". It sure does. Less gravity than on Earth, but there certainly is gravity.
It has a very tedious one just although enough to rise the sea levels by high tide.
No, you would not be able to walk on uranus. The person above is abosultely wrong. Everything with mass has a gravitational force. Uranus is much more massive than Earth, so obviously there is more gravity. I dont not know if it has 'too much' .
Keeps it on the ground.
The force of gravity is still there - and far out into space, but in the case of an orbiting body, it is exactly balanced out by the centrifugal force - or is it the centripetal. You research that last bit.
Birds is use they wing to keep them up. They flap and up in air. By moving their wings in a flapping motion, along with angling their bodies and internally measuring their speed, they are able to maintain a constant elevation. Some birds travel in V forms to ease the burden on the bird behind them...
Not at all. The force of gravity between two objects depends only on their masses and the distance between their centers. Their volumes have no effect. Another answer: As for as one object goes: Density of an object increases the escape velocity (or escape speed) which increases the...
Tesla complete a book about the mechanics of gravity but it is hindered due to the theory of einstein.. he invented antigravity device, UFO, which is now use by US military...
The diver and the Earth actually pull on each other with the sameforce. But with Force = mass x acceleration, rearrange that to:Acceleration = Force / mass. With such a large mass, the Earth isaccelerated by a miniscule amount. Compared to the acceleration ofthe diver, it is not noticed.
You have to use energy to raise a mass against the gravitational force, the object then has potential energy. If it is then let fall, this potential is released.
Gravity has never been detected. It remains one of the mysteries of physics because no wave or particle has ever been detected, but all indications are that it must exist. One of the reasons that is is not detectable is because it is like a quiet pond where all the water is still, because everything...
The mutual gravitational force between two objects is inversely proportional to the square of the distance between them. If the distance increased by a factor of 10, the force would decrease, and would become 1 / 10 2 = 0.01 times its original value. The original 500 newtons would...
If these two points do not coincide the two forces will also produce a couple that will rotate the body of the plane. If they do coincide the plane will rise, fall or stay at the same height without rotating about some axis. So yaw, pitch or roll is effected by offsetting the centre of pressure in...
Gravity is needed for buoyancy as if there was no gravity then there would be no need for buoyancy, the need for buoyancy is to counteract the pull of gravity so you can stay at the surface of a liquid such as water. If there was no gravity then there would be no need to counteract it. I hope...
The force of Earth's gravity on the 4-kg book is stronger than theforce of Earth's gravity on the 2-kg book.
Answer . where did you hear that from?
The force of attraction between all masses in the universe.
Zero gravity would be fun in small doses, but after a short time inzero G, there can be many problems: --Bone & Muscle Loss (you don't have to work as hard to move,or stand), you will return to Earth much weaker --Swelling of the face (body is used to fighting gravity to getblood to the brain) -...
Earth has a large metallic core composed primarily of iron, which is quite dense. The moon's metallic core is proportionately much smaller and a greater portion of the moon is composed of less dense silicates.
gravity causes wind,running water,glaciers,waves,and,rain to occur.without it theses would not occur.
The acceleration of gravity on or near the surface of Venus, and therefore the weight of objects located there, is about 9.7 percent less than on Earth.
Yes. The only thing that can affect the speed of either object is air resistance. If there's none, or if it's very small, then they fall with the same acceleration and land at the same time with the same speed, no matter what their masses are. A large amount of air resistnce with only a small...
gravity is everywhere
Stars has much more gravity then planets
The further from the earth that you are the less gravity acts on you. This is because the object with the greatest mass in this case the earth pulls you to it. This is why when you drop a pencil it falls to the floor instead of flyin back to your hand.
Gravity draggs the roots under whilst the roots try their best to pull upwards. This increases the plants strength and therefore it will grow quicker.