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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
Why does weight on an elevator change though you don't leave earths gravity?
If the elevator accelerates, the acceleration will provide an additional apparent force.
How does gravity affect ice hockey?
For the most part, it keeps the player, crowd, referees and puck on the ice.
The acceleration of gravity on Mercury's surface, and therefore the weight of any
object located there, is 37.7% of its value on the surface of the Earth. It follows
logically that a person whose body weighs 100 pounds on the Earth's surface
would weigh 37pounds 11.2ounces on the surface of Mercury just before it began
to vaporize in the bright sunshine there.
What is a negative response to gravity?
The normal reaction to gravity is attraction. Gravity tries to pull the two objects closer together.
A negative reaction would be that the two objects try to push apart.
Sounds like science fiction.
Is Earth's Gravity stronger or Jupiter's Gravity Stronger?
Jupiter's gravity is stronger than Earth's gravity. Jupiter is much larger and more massive than Earth, resulting in a stronger gravitational pull.
Why will the dense area of rock increase the local strength of gravity?
Because it would mean that there is more mass in the same little area, compared to the adjacent areas.
Why is the gravitational pull on liquids more noticeable than pull on solids?
Liquids are easier to move around more.
How does gravity affect planets?
Each planet is attracted by the Sun's gravity.
A planet has its own forward speed, which causes it to tend to travel at constant speed in a straight line. The Sun's gravity pulls at right angles to the planet's forward speed, causing it to curve towards the Sun all the time.
Isaac Newton proved that the curvature in the path followed is equivalent to acceleration towards the centre of curvature - the Sun in this case. He also proved that the amount of acceleration (curvature) is exactly explained by the law of gravity and the laws of motion.
What does gravity and pressure do?
Gravity and pressure both do lots of things. In the center of a star (such as our sun, Sol) it is the gravitational force of the star's mass which holds it together as a star, rather than an expanding cloud of gas which it otherwise would be, and which also causes the high pressure that exists in the center of the star. Stars are composed of a substance known as plasma, which is a super heated gas in which all the electrons are ionized rather than being bound to atomic nuclei. It is the weight of all this plasma which presses down on the center of the star causing the extremely high pressure and temperature which allows nuclear reactions to take place. Only when atomic nuclei are under enormous pressure will they ever get close enough to undergo nuclear reactions, and that is because they are all positively charged, and therefore repel each other. So gravity and pressure, working together, make it possible for the sun and stars to shine. Without gravity and pressure the universe would be a dark, cold place.
It is because the moon is much closer to the earth. Gravitational pull decreases in proportion to the square of the distance.
Does Earth have more gravity than Mars because it's bigger?
Strictly speaking, no. Earth has stronger gravity because it has more mass than Mars does. Size is a measure of how much space an object occupies. Mass is a measure of how much matter an object contains.
What special gravity does onyx have?
I wonder if you mean specific gravity? If so, onyx (part of the chalcedony group) has an SG of 2.6 and, in case you are interested a hardness of 7.
How do you do level 6 on gravity master?
Level 6: Drop a big stone on the end of the level and flip the ball up.
No, everything with a mass has gravity. That's why the planets orbit the sun. That's why moons orbit planets. The asteroid belt etc. If you drop something heavy on the moon, it'll still fall to the ground, this proves that there is gravity on the moon. The Mars rover is still on Mars, it hasn't
When you throw a basketball up in the air where does the gravitational pull of earth affect it most?
The gravitational pull of the earth is a tiny, tiny, tiny bit stronger at the lowest
point of the basketball's path, because it's closest to the center of the Earth.
But you would need ultra-high-precision instruments to detect the difference.
Is the farther a planet is from the sun have less gravity it has?
No. The strength of gravity on a planet depends on its size and mass.
Yes. It's just a theory that successfully explains most but not all of the motions
of stars and planets and falling bodies that we see around us, and accurately
predicts the results of most but not all of the experiments that we can do to
test it, and places space probes exactly where we want them when we use it
to design their missions.
So far, in the 350 years or so since the theory of gravity was written by Sir
Isaac Newton, that theory has been the best we have at explaining and
predicting. But the reasons are still a mystery, and it can't be proven. If
you come up with a theory that explains more of what we see and makes
more accurate predictions, then Newton's theory will be discarded and yours
will be adopted. That's how science works.
By the way ... here are a few more ideas that are just theories:
-- The Earth orbits the sun.
-- The sun's energy is the product of nuclear fusion in its core.
-- Everything is made of atoms.
-- Light and radio are both forms of electromagnetic radiation.
-- Influenza is a virus.
-- The center of the Earth is molten rock.
-- All distant galaxies are moving away from us at high speeds.
What is the eqyaion for density?
Density of a substance = (mass of a sample of it)/(volume of the same sample)
How much stronger is the earths gravity than the moons gravity?
The moon's gravity is about 1/6th of Earth's.
What is the different between geomagnetism and gravity?
Geomagnetism is the study of the earths magnetic field.
The structure of the magnetic field of the earth is far more complex than the structure of the gravity field.
Tidal variations in magnetic field have greater magnitude and more complex frequency structure as compared to the magnitude and frequency structure of tidal variation in gravity feilds.
Gravity is an inherent property of all objects on the earth surface but geomagnetism is not .
The earths magnetic pull is much weaker than its gravitational pull.
Geomagnetism is Dipolar while gravity is not.
Did isaac invent gravity by watching an apple fall?
Questions like this want to make me cry....
No he did not invent gravity he obsurved the apple fall and as a result he came up with the theory of gravity
What is the relationship of speed and acceleration due to gravity?
-- Acceleration of gravity, on or near Earth, is 9.8 meters ( 32.2 feet) per second2.
-- Speed, neglecting the effects of air resistance, is
9.8 meters (32.2 feet) per second
multiplied by
(number of seconds since the object was dropped)
regardless of the mass, weight, or size of the object.
What is the center of gravity in a triangle?
If its a 2 dimensional figure, draw a line from one corner to the middle of the opposite side , repeat for other two angles, meeting point is centre of area, and in plane (2D) figure this is also centre of mass.
What is the source of gravitational pull in your solar system?
The source of gravitational pull in our solar system is the combined mass of all the celestial bodies, primarily the Sun. Gravity is the force that attracts objects towards each other, and in our solar system, this force is what keeps planets, moons, asteroids, and other objects in orbit around the Sun.
