CONTEXT-RICH Your friend wants to be a magician and
Chapter , Problem 13(choose chapter or problem)
CONTEXT-RICH Your friend wants to be a magician and intends to use Earths magnetic field to suspend a current-carrying wire above the stage. He asks you to estimate the minimum current needed to suspend the wire just above Earths surface at the equator (where Earths magnetic field is horizontal). Assume the wire has a linear mass density of Would you advise him to proceed with his plans for this act?
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