a piece of metal 12volt batt a piece of wire
a magnet that remains magnetized for only a small time interval as compared to a permanent magnet.
There are two main/most common, types of magnet. One is permanent and the other is temporary. There could be more detailed classifications, but I do not know them ;)
The three things that are required to start and maintain fire are fuel,heat and oxygen.
The three things required for aerobic respiration, besides oxygen, are glucose (or another fuel source), enzymes to catalyze the reactions, and the presence of mitochondria where the process occurs.
Three things required to produce electromotive force (EMF) in an alternator are a magnetic field, a conductor, and relative motion between the magnetic field and the conductor.
three things required for electromagnet are hands eyes ears have fun! lol
oxygen, water, and the right amount of sun light
It doesn't
Clear cache memory delete temporary internet files and cookies decrease CPU usage
.
Uv rays, carbon dioxide, and water
iron nickel cobalt