Question: Alpha particles of charge q = +2e and mass m = 6.6 X 10-27 kg are emitted from a radioactive source at a speed of

Alpha particles of charge q = +2e and mass m = 6.6 X 10-27 kg are emitted from a radioactive source at a speed of 1.6 X 107 m/s. what magnetic field strength would be required to bend them into a circular path of radius r = 0.25m?

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