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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
Which planet has the highest gravity?
I'm quite sure that the planet with the highest gravity is indeed Earth, because even though it's not the largest, it is the densest. And gravity comes from density, not size. Also, the other planets are mainly comprised of gases, not liquids metals and rocks like the center of the earth.
Why does everything experience the force of gravity?
According to newton the earth pulls objects towards it. According to Einstein's theory of relativity (which is very, very well supported by experiments and predictions) gravity is the displacement of space by massive objects like planets, moons, stars and such. The earth literally bends space, so if something passing by the earth and is "pulled" in, it's actually going in a straight line, but the line (space) is distorted, so it changes course and moves towards the earth like a train whose tracks have been bent in one direction or another.
Einstein used the example of a bowling ball on a matress displacing the matress, curving space and drawing nearby objects in.
The purest water, is given the value of one (1) or unity. Unity is just a term that unites the number one (1) to a specific item. So that in the future you can relate another substance, to the substance given the value of Unity. Any substance lighter then water, like oil has a lower specific gravity. Any substance heavier then water, has a higher specific gravity. Some oils have a specific gravity of around 0.85 Some heavy substances like strong nitric acid have a specific gravity of around 1.4 Substances do not have to be liquids. They can be solids.
Which layer of the atmosphere has gravity?
The atmosphere is NOT again I repeat NOT a layer.
The layers are the exosphere, the thermosphere, the ionosphere, the mesosphere, the stratosphere, the ozonesphere, and the troposphere.
This is a problem encountered with extraction of Petroleum from the ground. Petroleum engineers use steam flooding processes to extract the oil from a reservoir. The Phase relationships of steam, water and hydrocarbons are critical to this process and can result in either Steam override or Gravity override.
A physical characteristic of steam injection processes that must be considered is steam override due to gravitational forces. Gravity override is caused by the fact that steam is much less dense than liquids and therefore will tend to rise in the porous medium. At the same time, hot water produced by the condensation of steam is more dense than some contaminants, so may tend to underride the zone to be treated. When there is a difference in density between the injected fluid and the fluid initially present, the slope of the interface between the fluids is equal to the difference between the vapor and liquid water phase viscous forces divided by the gravitational forces. The degree of gravity override increases as the difference in density between the liquid and vapor phases increases, as the permeability of the medium decreases, and as the viscosity of the liquid phase being displaced increases. One operational parameter that affects override is the steam injection rate. Source: Steam Injection for Soil and Aquifer Remediation by Eva L. Davis
What is the Formula for center of gravity of a rectangle?
The formula for the center of gravity of a rectangle is: X = (W/2) and Y = (H/2), where X is the distance from the side of the rectangle to the center and Y is the distance from the top of the rectangle to the center, W is the width of the rectangle, and H is the height of the rectangle.
How does weight affect gravity?
Weight is the force generated by mass when it is in a gravitational field. When a body is outside of a gravitational field, it is weightless but it still has mass.
So gravity doesn't exactly affect weight; gravity causes mass to have weight.
What effect does gravity have on a chair?
Gravity pulls the chair downward, causing it to stay grounded and not float away. It also affects the weight of the chair, as the force of gravity acting on the chair creates the sensation of weight when someone sits on it.
Gravity filtration is a method of filtering a liquid mixture using gravity to pull the liquid through a filter medium, such as filter paper or sand. The force of gravity causes the liquid to flow through the filter, leaving behind solid particles or impurities that are trapped on the filter medium. It is a simple and commonly used technique in chemistry and laboratory settings to separate solids from liquids.
because without gravity there would be no universe as we know it. gravity is what keeps us and everthing else on earth. it is the tendency of objects with mass to be attracted to each other. an objects mass is the amount of material it contains. the bigger the mass of an object, the stronger its force of gravity.
Does speed affect the gravity of an object?
Parabolic motion is more complex, because it has a horizontal component, but the horizontal speed is unaffected by the acceleration of gravity because the force of gravity is orthogonal -- at right angles -- to horizontal motion. the higher an object the faster it moves.
All objects with mass exert gravity, including planets, stars, and even people. Gravity is a fundamental force of nature that causes all objects to be attracted to each other. The strength of gravity is determined by the mass of the objects and the distance between them.
Is any relation between cement density Specific Gravity?
specific gravity of any substance can be find out only when it will be in liquid or gas medium.Because specific gravity of any liquid equals to ratio of density of that liquid to the density of water and specific gravity of any gas is the ratio of density of that gas to the density of air. cement is solid material(powder form) and so can not be graded on the basis of specific gravity in all conditions. (ravi nitesh,KPTL)
Is gravity a velocity or accelaration?
Well, F=MA
Force = Mass * Acceleration
Force takes into consideration Mass and Acceleration.
Acceleration is M/S2
Force is M2/S2
Acceleration is how much an object is speeding up. Force is how much impact the object will have when it collides with something. When an adult hits you with the same acceleration as that of a child, the hit of the adult will hurt more (feel harder). Why? This is because there is more mass to the hand of an adult than to that of a child.
Defying gravity is mentioned in the song (By the Beach Boys, I believe) Kokomo. It rattles off a list of West Indies resorts. Kokomo, however, is a town in Indiana .
There is also a song called defying gravity from the musical wicked. it is originally by idina menzel, but many people have sung it in the musical. idina menzel sings the version on itunes tho :) LOVE THAT SONG :)
What is the differnece between mass and gravity?
This is like asking: What is the difference between electricity and weight? Mass is the amount of physical material in an object, and gravity is a force. You may be asking about the fact that the mass of an object (under ordinary non-relativistic conditions) remains the same even if the object is floating freely in space. On the other hand, the weight of an object is a measure of the amount of gravitational force exerted on an object. On the surface of the earth, an object may weigh many tons, and have an associated mass measured in grams. That same object is weightless in space but has the same number of grams of mass no matter where it is. This is why you might see answers indicating that the earth or some other planet is weightless. This seems absurd, but it is true. The planets are very massive, but unless you can put them on a scale in a gravitational field, they don't weigh a thing.
I am not 100% sure, but I believe it is when gravity pick something up and it knocks against the rock, eroding it. It sometimes makes a small hole in the middle, and it sometimes causes there to be a part missing from the top of the rock.
If the earth stood still would gravity stop?
The acceleration due to gravity would not change, because gravity is not dependent on the earth's spin.
It remains the same. The equation for the acceleration of gravity only has radius, a constant, and the mass--nothing about rotation.
If the Earth stopped in it's orbit, then we would probably crash into the sun. This would happen because there is gravity and centrifugal force keeping the Earth in orbit. If the centrifugal force stopped, but gravity kept going then we would keep going until we hit something. Just like in space, If something is pushed by a greater force, it keeps going until something bigger stops it. This is Newtons first law of motion.
Obviously, the earth's rotation and evolution keeps the atmosphere intact, if it stops moving, it all will basically, with lack of better word, fall. Therefore, no life.
The earth turns on it's axis with a speed that's more than 1.040.4 mph. If Earth were to stop spinning, it would send a wind with a speed 1.040.4 mph, since that's how fast earth spins. This would send massive tsunamis and rip houses off the ground including trees and soil. It would be twice as much as a tornado, only on the whole earth. By the time the wind would slow down and stop, the earth would be demolished, and almost no life would be left. I imagine that the whole Earth would be covered in water from the tsunamis.
not possible.
There are two movements in the earth, rotation and revolution. The rotational movement causes days while the elliptical revolution causes the seasons and the concept of a year.
I am not sure what you mean by stop moving but if both movements ceased, we would no longer have "days" or "years." There would be a temperature differential from the side constantly receiving sun from the side never getting any sun. Time would not stop if that is your implication.
No. Gravity is not a substance. It is an attractive force between objects with mass.
The specific gravity of shale ranges from 2.65 to 2.80. This value can vary depending on the mineral composition and porosity of the shale. Specific gravity is a measure of the density of a material compared to the density of water.
Gravity is essential for keeping our feet on the ground and objects in place. It allows celestial bodies to orbit each other and stay in stable paths. Gravity also plays a key role in shaping the structure of the universe.
What are examples of gravity and friction?
-- You slide your mouse to the edge of the desk and lose your grip on it at the
same time. It accelerates toward the center of the Earth until the floor stops it.
-- You kick off your covers during the night, but you stay on your bed anyway.
-- You roll over in bed once too many. You accelerate toward the center of the
Earth until the floor stops you.
-- You accidentally hit a glass of soda with the back of your hand, tipping it so far
that the line between its center of mass and the center of the Earth no longer
passes through the bottom of the glass. At that point, the glass takes over and
continues to tip on its own. Meanwhile, the liquid in it runs out, and accelerates
toward the center of the Earth until the table stops part of it and the floor stops
the rest of it.
-- An airplane throttles its engine back, reducing the thrust acting on it, which
in turn reduces its airspeed and the lift developed by air pouring over its wings.
Whether or not the elevator surface is adjusted to temporarily maintain altitude,
it's a losing effort. Eventually, the aircraft must begin to lose altitude, and must
continue to do so until the ground stops it.
-- As a hilarious prank, several youngsters lug a large rock to the top of the tallest
building in town, roll it out to the edge, and heave it over. The Earth accelerates
toward the center of the rock, until the two meet and they stop moving toward
each other.
-- A weekend duffer hits a mighty drive off the tee of the 2-km par-9 3rd hole at
his neighborhood links. The ball enters a broad parabolic path, gaining altitude
steadily but at an unmistakeably dwindling rate. Eventually, it ceases its climb and
begins to drop, slowly at first, but with the steady growth of a burgeoning vertical
component of velocity, accelerating toward the center of the Earth until either the
sand or the water stop it.
-- What goes up must come down.
How does gravity affects uranus?
Gravity on Uranus is similar to other planets, as it is determined by the planet's mass and size. Objects on Uranus experience a gravitational force that is around 91% of Earth's gravity. This force keeps the planet's atmosphere in place and influences the orbits of its moons.
