Yes, gravity is present in a vacuum. If it weren't, planets wouldn't orbit the sun, moons wouldn't orbit planets ect.
Yes. Without gravity, we would have NO air to breathe.
Yes, gravity affects the air that we breathe. That is why it is harder to breathe when we go up high mountains. There is less air there. Without gravity, the air would float off into space, just as we would.
No, the air is what allows for lift. The only way an airplane can "fly" without air is if the downward force of gravity didn't exist.
You could measure the weight of a recipient with air, and compare it to one without air (with a vacuum instead).
These two are tied together. There is nowhere in the universe in which there are no gravity since the range of gravity is infinite. But Gravity gets weaker as get farther away, and therefore if you move far away enough, it would feel like there is no gravity. The reason why there is no air in space is that gravity attracts air, and without any gravity, all the atoms will either just slowly move around or just create their own gravity.
Gravity causes an object to fall from a height. Without gravity, the object would just be floating in the air.
The object will fall back to the ground due to gravity acting on it. Without a source of lift or propulsion to counteract gravity, the object cannot stay in the air.
Society would be exactly where it is now, but without space exploration,and possibly without air travel.
It doesn't exactly help. What it does do is keep the atmosphere around the planet from dissipating, which is not only necessary for atmospheric flight, but also for breathing and stuff. Atmospheric craft can fly because their wings generate lift as a result of their motion through the air. Without air, no lift. Without gravity, no air.
Air does not affect gravity directly, as gravity is a force of attraction between objects with mass. However, air resistance can have an impact on the motion of objects falling through the air, as it opposes the force of gravity and can slow down the object's descent.
Yes it does, Gravity has an effect on anything with mass! even a single attom. air even though it is invisible doesnt mean that there is nothing there you are moving around atoms of O2 and CO2
Yes!