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July 30, 2014

Homework Help: PHYSICS

Posted by Physics on Wednesday, May 26, 2010 at 5:24pm.

A long, straight wire lies on a horizontal table and carries a current of 1.45 ľA. In a vacuum, a proton moves parallel to the wire (opposite the current) with a constant speed of 3.00 104 m/s at a distance d above the wire. Determine the value of d. Ignore the magnetic field due to the Earth.

I got d=0.8939 but that was incorrect
B = mg /qv used this to find B
B = μo*I / 2πd used this to find d

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