Gravity

A directional (dimensional) and magnitudinal measurement of the wave form and frequencies that sub-atomic clusters of particles resonate at in order to attract or repel each other.

Gravity helped create the universe by pulling little dust particles together, forming everything that we know in the universe, like planets, stars, and asteroids.

By using rocket motors to apply an upward force to their ship that is

greater than the downward force of gravity.

Exactly what you do with your leg muscles when you want to propel

your own mass up a flight of stairs against the force of gravity.

Gravity

maybe so

it will cause a push on your spine

It's simple, just multiply your weight by .16! (It would be more efficient to use a calculator!)

The "500 - n" you mention is either the woman's name or her weight. If it's her

weight, then that is in fact the size of the mutual gravitational forces between

her and the Earth. It's her weight on Earth, and it's Earth's weight on her.

Gravity is present in a tornado, however, for objects that are not too heavy the upward flow of air in a tornado can overpower gravity. Tornadoes are dependent on convection, which requires gravity, but tornadoes themselves are a thermodynamic rather than gravitational event.

There's no limit to the distance over which the force of gravity extends.

Earth doesn't have to do anything in order to "form" gravity. Just by having mass, it's

gravitationally attracted to other masses, and the other masses are attracted to it.

That's true of every mass in the universe. Gravitational forces exist between a star

in another galaxy and the lint in your pocket, and between my dog and your goldfish.

The Moon, in the absence of the Earth, would move in a straight line. Earth's pull at a given instant of time pulls the moon closer to Earth, the new direction of Moon now being the resultant of it's old motion and Earth's inward pull. The moon would then like to move in a straight line, but along this new direction, on account of its inertia as enunciated by Newton's first law, but the next instant, the Earth pulls again the moon a bit more. If you keep doing this exercise, you will realize that the Moon describes an ellipse. So, the answer to your question is yes and no, yes because Earth makes the Moon move around it in a particular way due to gravity, but the cause of the initial motion of the Moon till Earth got hold of it is probably is buried in the formation of the Solar System!

Air pressure describes the weight of the air at any specific point on Earth. It is measured in units like millibars or inches of mercury.

Gravity holds the planet together as a 'ball' and you on it. It also makes things fall. We can measure this so we know the force of gravity on earth and can calculate it for other planets and stars.

Not quite. Wherever you are on the Earth's surface, the Earth's 'center' is roughly

4,000 miles down.

The deepest hole ever dug into the Earth began in 1970, on Russia's Kola Peninsula,

near the Norwegian border. 24 years later, in 1994, the final depth of 12,262 meters

was reached. That's about 7.62 miles, or 0.2 percent of the distance to the center.

Before that, the previous record holder was the Bertha Rogers gas well in Oklahoma.

It was stopped in 1974, when it struck molten sulfur at 32,000 feet. That's about

6.1 miles, or 0.15 percent of the distance to the center.

If he is aboard something that's in Earth-orbit, like the International Space Station

or the Space Shuttle, then Earth's gravity is what's keeping him in orbit.

Every substance has a specific gravity.

Aluminum's is around 2.6 .

You raise a room very high in the sky with a helicopter, then get in, close the door and drop the room. Inside the rooms frame of reference you will experience zero gravity force acting upon you. Until the sudden stop at the ground of course.

If you want a truly zero gravity room you must launch a room into space and send it infinitely far away from any other masses in the universe. Then of course the room itself will have a very small gravitational effect upon you so it won't technically be zero gravity. The truth is, zero gravity does not exist in the known universe, since the visible universe contains matter which has mass which leads to gravitation.

Other than putting a room in a free fall frame of reference such as the falling room or in an orbiting space station there is no zero gravity room.

Yup.

Its not uncommon to experience space sickness for the first day or two in space. Some people never adapt (see Jake Garn).

If th sun's gravity were to disappear, Earth would go off in a straight line into interstellar space.

Yes. 10m/s^2 is only slightly greater than the surface gravity on Earth (9.8m/s^2). The surface gravity of a planet is not terribly important to its ability to keep water liquid so long as it can maintain decent atmospheric pressure.

Saturn's largest moon Titan has a surface pressure greater than Earth does, despite gravity being only about 1.3 m/s^2.

There is no such thing as zero gravity. Every mass, no matter how great or small, has a gravitational pull towards you, and you have a gravitational pull towards it. In space, tiny hydrogen atoms fly around, about 1 for every large living room. Even though their gravitational pull on you will be tiny, there will still be gravity, even in deep space or places where there are no planets.