What causes a objects to move or stay still? claim and evidence

Force

Explanation:

A force is a push or pull that causes an object to move, change direction, change speed, or stop. Without a force, an object that is moving will continue to move and an object at rest will remain at rest. ... An example is that gravity and friction, resist or work against any movements.

measure their densities same density, same sub

the minimum amperage that the current in this wire would have to have so that its weight is completely supported by the magnetic force due to earth's field, assuming that no other forces except gravity act on it