In a Mass Spectrometer,a Single-Charged Particle Has a Speed of 1.00

question 23

Multiple Choice

In a mass spectrometer,a single-charged particle has a speed of 1.00 × 10⁶ m/s and enters a uniform magnetic $\vec { B }$ of 0.200 T at a right angle to the $\vec { B }$ field vector.The radius of the resulting circular orbit is 20.75 cm.What is the mass of the particle? (e = 1.60 × 10^-19C)

• A)3.20 × 10^-27 kg
• B)6.64 × 10^-27 kg
• C)1.67 × 10^-27 kg
• D)9.11 × 10^-31 kg

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