A cyclotron is designed to accelerate protons (mass 1.67 × 10^{−27} kg) up to a kinetic energy of 2.5 × 10^{−13} J. If the magnetic field in the cyclotron is 0.75 T, what is the radius of the dipole magnets in the cyclotron?

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14 cm

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24 cm

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17 cm

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5.8 cm