OpenStudy (anonymous):
Which item is necessary to make an electromagnet? A. http://static.k12.com/calms_media/media/1488000_1488500/1488263/1/00a4d103dc149f29c34586c79dc94925a2f42a98/MS2_PHY_08_07_assess_Copper_wire.jpg B. http://static.k12.com/calms_media/media/1488000_1488500/1488265/1/d893ef2f4826f8c8fc34fe4c079980165f061227/MS2_PHY_08_07_assess_plastic-spoon.jpg C. http://static.k12.com/calms_media/media/1488000_1488500/1488322/1/6b25934c69833ca10b9bed252013c30bab674fc4/MS2_PHY_08_07_assess_wooden_cube.jpg D. http://static.k12.com/calms_media/media/1145500_1146000/1145704/1/778decb3d2327d75fce4fb2fd8
OpenStudy (anonymous):
@rational
OpenStudy (anonymous):
To make an electromagnet you need a wire which you can coil around a ferromagnetic core, like a piece of iron.
OpenStudy (anonymous):
so which one is it? @ghuczek
OpenStudy (anonymous):
Look carefully at what I wrote. Which one would you choose?
OpenStudy (anonymous):
This is k12 right?
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