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A mass spectrometer (see figure below) operates with a uniform magnetic field of 14.0 mT and an electric field of 4.10x 103 V/m in the velocity selector. What is the radius of the semicircular path of a doubly ionized alpha particle (ma 6.64 x 10-27 kg)? Photographicg plalie Region Region 2 OE в, Velocity selector

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