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September 1, 2014

Homework Help: Physics URGENT!!!

Posted by AL on Friday, November 9, 2007 at 8:46am.

At a certain location, the horizontal component of the earth's magnetic field is 2.5 x 10^-5 T, due north. A proton moves eastward with just the right speed, so the magnetic force on it balances its weight. Find the speed of the proton.

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