Question

based on the trends you observed in the laboratory exercise, which objects would you expect to be attracted to a bar magnet? check all that apply. a metal hammer a wooden ruler a plastic car the metal frame of your chair the paper in your notebook the screws and nails that hold your desk together

Explanation:

Bar magnets attract ferromagnetic materials (like iron, steel). A metal hammer (if ferromagnetic), the metal frame of the chair (if ferromagnetic), and screws/nails (usually iron/steel) are ferromagnetic. Wooden ruler, plastic car, paper are non - magnetic.

Answer:

a metal hammer, the metal frame of your chair, the screws and nails that hold your desk together