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A charge of 23 coulombs (not micro-coulombs) with a mass of 7 kg is traveling in a helix in a uniform magnetic field directed in the +z direction. The helix has a radius of 13.4 meters. In a time of 0.12 seconds, the charge's displacement in the +z direction is 2.8 meters. If the magnitude of its (total) velocity is 60 m/s, what is the amount of the magnetic field in Tesla?

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