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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
Do the planets and sun repel each other?
No, the gravitational force is always one of attraction, unlike electrical forces which can attract and repel depending on positive or negative charges.
What is the most likely reason that you do not generally feel jupiters gravity on earth?
The most likely reason is that I am always between 91,700 and 150,000 times
as far from the center of Jupiter as I am from the center of the Earth, and the
gravitational effects of any mass fall off in inverse proportion to the square of
my distance from it. Not only do I 'generally' not feel the effects of Jupiter's gravity
around here, but it's quite safe to say that I never feel them.
Why is planet earth the have the weakest gravity?
It doesn't. Mercury, Venus, Mars, and Pluto have less gravitational acceleration
at their surface than Earth has.
That leaves only Jupiter, Saturn, Uranus, and Neptune with stronger gravity.
How high up can you jump out of a plane and still be pulled back to earth by gravity?
There's no limit to the distance over which gravity acts.
There is gravitational force attracting the smallest speck of lint in your pocket to
the smallest grain of sand on the farthest beach on the farthest planet orbiting
the farthest star in the farthest galaxy from Earth. If there's nothing holding them
apart, they will be drawn toward each other by gravity and eventually meet.
Well, I suppose if your plane happened to be about 214,000 miles up AND the moon
happened to be straight up over you only 24,000 miles farther out, then you'd be at
the point where the moon's gravity is just starting to be stronger than the Earth's,
and it could pull you the other way when you stepped out.
But if there's nothing else around to pull you harder, then there's no limit to the distance
out to which Earth's gravity extends.
Could gravity affect velocity. If so how?
Yes. It makes things fall.
Answer2:
Gravity establishes the orbiting velocity, v2 = GM/r.
How do you find the center of gravity of a circle and a rectangle?
In both cases, because of their symmetry, the center of gravity is in the geometric center.
Which is determined by the force of gravity?
-- Your weight is, as long as you're standing on the Earth or some other planet,
but it's different in different places.
-- Also, the speed of the moons, comets, asteroids and planets in their orbits,
and also the length of time it takes them to revolve in their orbits.
Interesting! Horizontal distance covered by arrow=20m=Vx(t),
put Time=t=0.5s, so Vx=20/.5=40m/s.
Now let us consider vertical motion of the arrow,
Vertical distance=4m-1m=3m. so Use Second equation of motion now.
Y=Vy(t) - gt2/2.
Subtituting the values,
3=Vy(0.5) - 9.8(.5)2/2. Solving for Vy, we get,
Vy= 8.45m/s and Vx=40m/s. now
V2=(Vx2+Vy2) or V2=(8.45)(8.45)+(40)(40)=71.40+1600=1671.40m/s, so
V=(1671.40)1/2=40.88m/s. That is the answer!
How do you get the specific gravity of aggregates in cold mix asphalt?
give me a blowjob then i will tell u the answer.
Can their be negative gravity?
Yes, there can be negative gravity. If a gravity is a pulling force then in the other hands a negative gravity would be a pushing force, in other words, the negative gravity would push us to wherever and the positive gravity on Earth would pull us.
Where is the center of gravity in a structure?
For a structure (usually a tower) that is perpendicular to the ground, if the center of gravity were to go a distance over its base, it will fall over. Can be seen in the leaning tower of piza. The reason it has not fallen over is because its center of gravity has not exceeded the length of its base.
Where the gravity is max and where minimum?
On the poles the gravity will be maximum. on the equatorial region the gravity will be minimum
The effect of an 'Ancient Gear' will not negate the effect of 'Gravity Bind'. The effects of Spell or Trap Cards that are already face-up can still have their effects activated. However, face-down Spell or Trap Cards cannot be activated.
no it doesn't because gravity bind doesn't allow attacking for lv 4+ which means their effects would not trigger
The force of gravity between two objects is proportional to their masses and inversely proportional to the square of the distance between them.
What causes the gravitational force of the moon and the earth?
The distortion of spacetime in response to their respective masses causes their respective gravitational forces.
Center of gravity of irregular shapes?
The center of gravity of an irregular shape can be measured, for example by hanging the object from two different points (points of the object), then watching where the lines (from the point where it is hung up downwards) intersect.
If you know details about the shape, the center of gravity can also be calculated by integration. Basically this means dividing (through calculation) the shape into small pieces, and adding up the results.
Was isaac newton the first person to discover gravity?
Isaac Newton did not discover gravity, but he is credited with developing the universal law of gravitation and explaining the mechanics of gravity in his work "Philosophiæ Naturalis Principia Mathematica." The concept of gravity was known to ancient civilizations, and Newton's contributions built upon existing knowledge.
What is the spring constant of an average ball point pen spring?
I figure anywhere between 20 and 100 N/m. Someone correct me if I'm wrong on the answer, but no one will answer this with an example of the force it would take, only formulas.
If you think about it, 1 newton would take you about 2-5 cm, which would equate to [k=F/x] k=1N/0.02, resulting in k=50 N/m. That equation is saying if you would take a meter-long pen spring, it would take 50 neutons to compress it completely. Hope this helps.
- Fellow physics student
When the only force acting on a falling object is gravity the objects is said to be?
= Terminal velocity =
Are the tides on earth caused by the gravity?
Tides on Earth are caused by the gravity of the moon and, to a lesser degree, the sun.
Minor planet.
Pluto was recently downgraded to one. IAU calls them "dwarf planets"
If a dwarf planet is outside the orbit of Neptune, guess what?Plutoids are celestial bodies in orbit around the Sun at a distance greater than that of Neptune that have sufficient mass for their self-gravity to overcome rigid body forces so that they assume a hydrostatic equilibrium (near-spherical) shape, and that have not cleared the neighbourhood around their orbit."
This sub-category includes Pluto, Haumea, Makemake and Eris.
(wikipedia)
Therefore, minor planet is the answer. Under minor planet are "dwarf planets" which are rounded, but don't clear their neighborhood. Under "dwarf planets" are Plutoids. So if you refer to Pluto, it is all three.
In which Country was the Concept of Gravity first proposed?
It doesn't need to be "invented," it's obvious. Most animals will not voluntarily walk out on a glass slab over a deep pit, indicating that they have the "concept" of gravity. The Law of Universal Gravitation was first formulated by Isaac Newton in England, but Galileo Galilei in Italy demonstrated some of the principles a few years before.
Why don't electron go inside proton?
In our Universe, various quantities come in "chunks" called "quanta." Amongst these are electricity, which cannot come in any amount smaller than one elementary charge.
For (relatively) large things, we can have two objects separated by distances (in micrometers) of 1.000 or 2.000 or 1.500 or 1.379. However, as objects get smaller and smaller, we find that, in our Universe, the quantitization of quantities becomes more and more important.
One such quantized quantity is energy state. Basically, when an electron is within the electric field of a proton, our Universe REQUIRES that the electron be in a specific orbital (try not to confuse that word with "orbits," which implies that the electron is circling around the proton) outside the proton.
The lowest possible orbital that our Universe will permit an electron to be around a proton is the 's' orbital, in which the electron is MOST LIKELY to be about one angstrom from the proton, with no preference for direction. In other words, this orbital resembles (note the word!) a shell. Our Universe will not permit an electron to be in any lower energy state; ie, it can NOT get any closer to a proton.
Don't like this fact about our Universe? Unfortunately, this is the one we'll have to learn about -- we don't have any other Universes to choose from.
