Friction is a force. A resistance force that tries to slow down and stop objects in motion. The difference between friction and air resistance is that friction acts on surfaces. For example, if I were skateboarding on a rough surface, more friction would occur so I would travel slower. If I were skareboarding on ice, I would go faster because there is much less friction to slow me down. Hope that helps:)
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The compass needle will point towards the magnetic field, so if it is in a magnet it will most likely spin around in circles.
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sound waves
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The answer is A, the volume increases.
hope this helps
It will be unstable system because it will not be able to recover from the disturbance
