Definition: This law states that, in any process, energy is neither created nor destroyed. It can only be converted from one form to another.
What’s the word for this definition

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.

wavelength divides in half and speed stays the same.

this would be about 43%