Would you expect the work performed by each simple machine to be exactly the same as the work performed without it? Why or why not?

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.

the duration of a photographic flash is related to an rc time constant, which is 0.100 μs for a certain camera.

you can cut your hand off if your not