Wednesday, April 18, 2012

Physics question of the week (3)

A boat is sailing due north, as indicated by its compass needle, in a location where Earth's magnetic field is 2.0 X 10-5 T. The boat’s captain inadvertently places his radio on the shelf directly above the compass.  If the 5.0 A current carrying wire of the radio is aligned in a north-south direction and is 30 cm directly above the compass, how much from due north with the compass needle be deflected?  


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