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Physics 18 Online
OpenStudy (anonymous):

A thin 2.09 m long copper rod in a uniform magnetic field has a mass of 40.6 g. When the rod carries a current of 0.229 A directed perpendicular to the magnetic field, it floats in the magnetic field. The acceleration of gravity is 9.81 m/s² . What is the field strength of the magnetic field? Answer in units of T .

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