An electron ( me = 9.11x1031 kg q=1.6x1091 C) moves in a circular path perpendicular to a uniform magnetic field with a magnitude of 7. mT. If the speed of the electron is 1.5 x107 m/s, determine the radius of th circular path ( in units of cm). Select one: A. 1.17 B. 1.44 C. 1.72 D. 0.04 E. 0.62

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