Gravity

Acceleration due to the earth's gravity is zero at the center of the Earth because at that point the mass of the earth is equally distributed in all directions, so pulling equally in all directions for a net zero pull.

Simplistically, acceleration due to gravity decreases as distance from the center decreases. At the center the distance is zero, hence gravity is zero.

Gravity plays a crucial role in creating convection currents by pulling denser, cooler fluid downwards and pushing lighter, warmer fluid upwards. This sets in motion the circulation of fluid, which drives convection currents in liquids and gases.

The specific gravity of soft drinks can give an indication of their sugar content, as drinks with higher sugar content tend to have a higher specific gravity. This measurement can also provide information about the density of the beverage compared to water, which can indirectly reflect the concentration of dissolved solids or additives in the drink. Differences in specific gravity between soft drinks may be influenced by ingredients like sugar, artificial sweeteners, or other additives.

The specific gravity of granite typically ranges from 2.63 to 2.75.

As you get far away from Earth the amount of air decreases because the plants provide air and as we go further away from the earth the plants are not there so that's why the air becomes thin and thin and then slowly and gradually there is no air.

Specific gravity is a comparison of the density of one material to the density of water (at 4 degrees C). When a mineral has a specific gravity (SG) of 7.0 it means that the mineral is 7.0 times as heavy as the same volume of water.

The effect of gravity on matter is measured by its mass and distance from other objects. Gravity causes matter to be attracted to each other, creating phenomena such as gravitational waves and orbits. The strength of gravity between two objects is determined by the product of their masses and inversely proportional to the square of their distance.

== == Sir Isaac Newton _____________________ I think we have to go to Albert Einstein on this one. Newton uncovered some powerful ways to describe the mechanics of gravity. But his work, monumental as it is, doesn't offer any insight into the nature of gravity itself. In fact, Newton's work implies that gravity works at great (astronomical) distances instantaneously, and we have strong evidence currently that this is not the case. Einstein's work offers some insights into the very nature of gravity as a force, and it corrects Newton's equations which are not accurate at relativistic velocities. Newton did assemble the most complete description of gravitational mechanics, and his equations even helped us during our space missions including the moon landings. But in terms of a 'theory of gravity', Einstein takes the prize (in my opinion).

Issac Newton was the first person to theorize the laws of gravity, and wrote 3 principles (Newton's 3 Laws Of Motion) that all objects must follow. His 3 principles were first published in 1687, and since then, many noted physicists, astronomers, and scientists have used them to explain and understand the movements of the universe. Gravity has always been here, since the dawn of time, but Newton is credited for explaining how it worked.

Gravity is pulled towards the earths surface. From the top and bottom. The reason how i know this as i am 14 at school and have done many projects on this and researched books and been on the internet and all have been the same. i hope this will help you, and help others in their learning. thank you

Gravity isn't necessary for human life, as we can see on the International

Space Station, where crew members spend months with no gravity at all.

But even if gravity were absolutely essential, that would not be a problem

on Mars, which has plenty of it.

Yes. Earth's gravity is still very present at 36,000 km. This is what keeps geosynchronous satellites in orbit. Earth is the dominant gravitational body much farther out than that, to a distance of about 1.5 million km. Beyond that distance there is still gravity, but the sun, not Earth, dominates.

There would be nothing to hold us, or any loose object or fluid, down against the spin of the Earth, so the spinning Earth would throw us off. The Earth turns at a rate of about 1,000 miles per hour at the Equator, lessening as you get closer to the poles. It would be very unpleasant, briefly.

Playing with the basic laws of physics requires lots of imagination.

The moon would leave orbit and would likely assume an irregular orbit about the sun (assuming the sun still had gravity).

The atmosphere would all drift away.

The oceans would be hurled into space at 1000 miles per hour at the equator.

The continents would drift away, starting with equatorial areas and with the polar regions last.

The rest of the earth would spin itself apart a layer at a time until there was too little rotating mass left to break apart.

Everything on Earth will float in all directions.

The force of gravity between two objects is directly proportional to their masses - greater mass means stronger gravitational force. The force of gravity is inversely proportional to the square of the distance between the objects - greater distance means weaker gravitational force.

No, Jupiter's gravity is not strong enough to crush bones. While Jupiter does have a strong gravitational force, it is not powerful enough to crush bones of a human or any typical object.

Only the Earths gravity has a direct affect on humans, because the moon is 1/4 the size of Earth, so the moon's gravity is much less than the earth's gravity, 83.3% (or 5/6) less to be exact.

Our bodie mass is way too small to be affected in any way by any planet in the solar system. The moon moves away at about an inch every three years, so it will not affect anybody anytime soon.

Gravity affects objects in Earth's sky by pulling them towards the center of the Earth, causing them to orbit or fall towards the Earth. It keeps celestial bodies like the Moon in orbit around the Earth and holds satellites in their trajectories. Gravity also causes objects to accelerate towards the Earth's surface at a rate of 9.8 m/s², resulting in everything falling downwards unless an opposing force, like air resistance, acts upon them.

The forces that affect the rate of a falling object are Gravity and Air Resistance.

Gravity affects the speed and the velocity of the object by speeding it up as it falls closer to the earth, and Air resistance works against the object pushing against it.

Let's take these one-at-a-time ...

-- Time doesn't 'stop'. If you shoot past Bob at high speed, and you and Bob look at each others'

clocks as you pass, Bob will say that his clock is running normally and yours is running slow, while

you will say that your clock is running normally and Bob's is running slow. You'll both be correct.

If you were moving past Bob at the speed of light, Bob would say that his clock is OK and yours

has stopped, while you would say that your clock is OK and Bob's has stopped. Again, you would

both be correct.

-- You don't reach the speed of light.

-- Within a certain distance of a black hole, light can't escape.

(That's why the region looks black from outside of it.)

The light trapped in there is still moving at the speed of light.

But nothing else in there is moving at the speed of light.

This is not what I was asking and is incorrect (I edited my question for clarity). It is motion that is relative. Bob can claim you are moving or you can claim Bob is moving and both are correct. Time is different if you speed up you move through space faster thus you move through time slower. If you traveled at speeds near the speed of light for years when you returned to earth the people on earth would have aged more than you. Space and time are part of the same fabric. Once you reach the speed of light time stops because you are moving through space as fast as you possibly can thus there is no room for you to move through time. When it comes to the distortion of space time velocity and gravity are the same. If you are in a place with high gravity time slows down. So if you are in a black whole which has enough gravity to over power light which time stops at, does time go in reverse inside the black hole.

Oil has the highest specific gravity. Water has the second.

7129 / 6105195 is part of a message left behind by Edward Leedskalnin regarding his "Answer to the Universe".

A spinning object does not create gravity. But it does create centripetal forces (also previously known as centrifugal forces) whereby an object traveling the path of a spinning object is propelled toward the outside wall of the spinning object, due to the force angled to the rotation of the circle counteracting the force of the smaller object traveling tangent to its path. The strength of this force is often measured in "G's". A "G" is equivalent to the force of gravity, ie: 2 "G" is equivalent to twice the force of gravity.

On the earth's surface at the poles we find gravity will be the strongest. The earth is what is called an oblate spheroid, and that means it bulges out in the middle (the equator). That also means the poles end up a little closer to the center of gravity, and you'll weigh more there.