Working on science home workNeed simple but A work answers
key words are cans and bottles that's what they are looking for
It varies by city, the only way to get an accurate list is to contact your solid waste department and askMost cities also have this information on their websites.
Their main use is in electric motorsIn fact, all electric motors have at least 1 electromagnet as part of the designThe next most common use is in electrical relay switchesHere the magnets are used remotely to close and open electrical contacts or air or water valvesThese sorts are the kinds in washing machinesOf course speakers and microphones also use electromagnets to turn air waves into electrical signals and electricity back again to air wavesCuriously, their least common use is the way they are always shown in the movies - those electromagnet scrap iron lifting cranes.
