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Exercise 27.20 Cyclotrons are widely used in nuclear medicine for producing short-lived radioactive isotopes These cyclotrons typically accelerate H (the hydride ion, which has one proton and two electrons) to an energy of 5 MeV to 20 MeV This ion has a mass very close to that of a proton because the electron mass is negligible-about 2000 of the proton s mass. A typical magnetic field in such cyclotrons is 2.1 T Part A What is the speed of a 50 MeV H Express your answer with the appropriate units. Units Value Submit My Answers Give Up Part B If the H has energy 5.0 MeV and B 2.1 T, what is the radius of this ionOs circular orbit? Express your answer with the appropriate units. Value Units Submit My Answers Give Up Provide Eeedback Continue
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pout A)the 27 AN Pout B 14-1C O

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