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to many to countI think also too!Cause there are so many thing that can move.
The answer depends on what gas the balloon contains, its initial velocity and the forces - gravity, buoyancy, cross-wind - acting on it.
The larger the force, the faster something will move. Or more accurately, the faster its velocity would change.
For Archimedes to move the Earth with a lever he would need: - a rock to put under the Earth (to act as a fulcrum) - a board/stick long enough & strong enough to lift the Earth - somewhere to stand....he can't stand ON the Earth and move it, so where would he stand?..........in space?
18 minutes? i think. =]