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July 31, 2014

Homework Help: physics

Posted by maria on Tuesday, April 19, 2011 at 12:16am.

A thin 2.82 m long copper rod in a uniform
magnetic field has a mass of 44.2 g. When the
rod carries a current of 0.238 A, 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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