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In a cyclotron, the orbital radius of protons with energy 300 keV is 16.4 cm ....

In a cyclotron, the orbital radius of protons with energy 300 keV is 16.4 cm . You are redesigning the cyclotron to be used instead for alpha particles with energy 300 keV . An alpha particle has charge q=+2e and mass m=6.64×10−27kg .

A. If the magnetic field isn't changed, what will be the orbital radius of the alpha particles?

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