A physicist claims that she has found a new particle with a mass 200 000 times the mass of the proton (1.67 × 10^-27 kg) and a charge of 3.20 × 10^-19 C. If she is correct, such a particle traveling in a circle in a uniform 5.00 T magnetic field at a velocity of 2 500 m/s will have a radius of
a. 0.261 m.
b. 0.522 m.
c. 1.04 m.
d. 3.27 m.
e. 3.13 × 10^26 m.
B
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