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A beam of α particles (helium nuclei) is used totreat a tumor located 10 cnn inside a patient. To penetrate to the tumor, the particles must be accelerated to a speed of 0.46c. (Ignore relativistic effects.) The mass of an a particle is 4.003 u. The cyclotron used to accelerat m. What is the magnitude of the magnetic field? e the beam has radius 1
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