Multiple Choice
Alpha particles,each having a charge of +2e and a mass of 6.64 × 10-27 kg,are accelerated in a uniform 
Magnetic field to a final orbit radius of 
The field is perpendicular to the velocity of the particles.What is the kinetic energy of an alpha particle in the final orbit? (1 eV = 1.60 × 10-19 J, 
A) 3.0 MeV
B) 2.6 MeV
C) 3.4 MeV
D) 3.9 MeV
E) 4.3 MeV
Correct Answer:

Verified
Correct Answer:
Verified
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