Dropping a temporary magnet on the floor may destroy its magnetism because the floor absorbs the magnetic field the domains are knocked out of alignment the electrons start spinning the other way the heat generated by the collision destroys the magnetism

Dropping a temporary magnet on the floor may destroy its magnetism because the domains are knocked out of alignment

Explanation:

An object behaves as a magnet when all the domains are aligned in a single direction. A temporary magnet is created when domains are temporarily aligned in the presence of another magnetic field. When this magnet is dropped on the floor, the domains dis-align causing the demagnetization of the magnet.  

answer: i'm not sure which is which for i get confused on it all the time but i can tell you that the answer lies with the convex and concave devices. i hope this you. have a good day and best of luck to you!

explanation:

need to see circuit to get time constant