Mass Spectrometer
28. Magnetic Fields and Forces / Mass Spectrometer / Problem 1
Positively charged alpha particles move in a circular path with a radius of about 4.0 cm under the influence of a magnetic field with a strength equal to about 1.0 T. What magnitude and direction for an applied electrical field would cause these alpha particles' trajectory to become linear? [Hint: The mass of an alpha particle = 6.644 × 10-27 kg, the charge of an alpha particle = +2 ×1.602 × 10-19 C.]
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