A proton with a kinetic energy of 0.20 keV follows a circular ...

[dalyningkenk]

A proton with a kinetic energy of 0.20 keV follows a circular path in a region where the magnetic field is uniform and has a magnitude of 60 mT. What is the radius of this path?
 a. 4.1 cm
  b. 2.9 cm
  c. 3.4 cm
  d. 5.1 cm
  e. 2.4 cm

Question 2

An electron follows a circular path (radius = 15 cm) in a uniform magnetic field (magnitude = 3.0 G). What is the period of this motion?
 a. 0.12 s
  b. 1.2 ms
  c. 0.18 s
  d. 1.8 ms
  e. 1.8 s

[Pamela.irrgang@yahoo.com]

Answer to Question 1

c

Answer to Question 2

a