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www.engineeringinteract.org/...siliconspieslink.htm
www.worldbookonline.com/...lesson
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www.energizer.com.pr/como-hacer-un-electromagneto
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www.energizer.com.pr/...circuito-simple
www.fossweb.com/...electromagnet.html
www.thetech.org/...10a.html
Mark Broughton
24 items | 22 visits
Updated on Dec 04, 14 Created on Oct 18, 11
Category: Science
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