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A cosmic ray of charge +6 e approaches the Earth’s equator with a speed of 3.5...

A cosmic ray of charge +6 e approaches the Earth’s equator with a speed of 3.5 × 107 m/s. If the acceleration of this particle is 9.1 × 1010 m/s2 , what is the approximate mass of the cosmic-ray particle? (Assume the Earth’s magnetic field strength ≈50 μT.)

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