Mass Sprectrometer: In a mass spectrometer, a single-charged particle has a speed of 1.00 × 106 m/s and enters a uniform magnetic field of 0.200 T at a right angle to the field. The radius of the resulting circular orbit is 20.75 cm. What is the mass of the particle? (e = 1.60 × 10-19 C)
A. 3.20 × 10-27 kg
B. 6.64 × 10-27 kg
C. 1.67 × 10-27 kg
D. 9.11 × 10-31 kg
Answer: B
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