If you are dragging the block at a constant velocity, what is the relationship between the force you are applying and the force of friction (ie, is one bigger than the other or are they the same?

a.metals can become magnetic if they have many spinning electrons that create magnetic fields.d.only some metals are attracted by magnets; these metals are called ferromagnetic.

d.wrapping an insulated wire around a metal with ferromagnetic properties and applying an electric current.

mass and volume are the answers you are looking for