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Unformatted text preview: lim (kl9356) Homework 12 Weathers (22202) 1 This print-out should have 10 questions. Multiple-choice questions may continue on the next column or page find all choices before answering. 001 10.0 points What is the radius of the smallest possible cir- cular orbit that a proton with energy 2 . 8 MeV can have in a 2 T magnetic field? The mass of a proton is 1 . 67 10- 27 kg and its charge is 1 . 609 10- 19 C. Answer in units of m. 002 10.0 points A singly charged positive ion has a mass of 1 . 78 10- 26 kg. After being accelerated through a potential difference of 398 V, the ion enters a magnetic field of 0 . 237 T, in a direction perpendicular to the field. Calculate the radius of the path of the ion in the field. Answer in units of cm. 003 (part 1 of 2) 10.0 points A cyclotron designed to accelerate protons has a magnetic field of magnitude 0 . 35 T over a region of radius 5 . 7 m. The charge on a proton is 1 . 60218 10- 19 C and its mass is 1 . 67262 10- 27 kg. What is the cyclotron frequency? Answer in units of rad / s. 004 (part 2 of 2) 10.0 points What is the maximum speed acquired by the protons? Answer in units of m / s....
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