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An alpha particle (q = +2e, m = 4.00 u) travels in a circular path of...

An alpha particle (q = +2e, m = 4.00 u) travels in a circular path of radius 6.40 cm in a uniform magnetic field with B = 1.02 T. Calculate (a) its speed, (b) its period of revolution, (c) its kinetic energy, and (d) the potential difference through which it would have to be accelerated to achieve this energy.

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