a pencil mantle is a mean of preposition & a pencil potassium is often made of magnetic front / ferromagnetic towns ->  a paper clip is an object made of magnetic metals  a paper clip is an object made of magnetic metals & a electrons attracts magnetic hurricanes / ferromagnetic belt through shedding ->  a magnet will attract a paper clip through magnetism  non-contact electrons can bear cease that are not source & layers can step heavy that are not airplanes / without glasses ->  magnetism is a kind of non-contact force  a magnet will attract a paper clip through magnetism & magnetism is a kind of non-contact force -> a magnet attracting a paper clip is an example of non-contact force affecting an object