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Physics

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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 -

    consider forces

    qvB=m v^2/r

    solve for radius

  • Physics -

    What do I use for q?

  • Physics -

    q=e=1.6x10^-19 C

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