Homework Help: Physics

Posted by Rex on Wednesday, June 6, 2012 at 7:25pm.

Singly charged positive ions are kept on a circular orbit in a cyclotron. The magnetic field inside the cyclotron is 0.947 T. The mass of the ions is 3.01×10-26 kg, and speed of the ions is 3.45 percent of the speed of the light. What is the diameter of the orbit? (The speed of the light is 3.00×108 m/s. Neglect relativistic effects.)
How many times do the ions complete their orbit in 11.0 s?
Thanks!

Physics - bobpursley, Wednesday, June 6, 2012 at 8:15pm
consider forces

qvB=m v^2/r

solve for radius
Physics - Rex, Wednesday, June 6, 2012 at 9:23pm
What do I use for q?
Physics - Elena, Thursday, June 7, 2012 at 4:35am
q=e=1.6x10^-19 C

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