Physics pls help

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A proton is moving in a circular orbit of radius 11.8 cm in a uniform magnetic field of magnitude 0.232 T directed perpendicular to the velocity of the proton. Find the orbital speed of the proton. Answer in units of m/s.

I came up with .118/2.83x10^-7 and it was incorrect.

  • Physics pls help -

    Of course it is incorrect. Do you think an electron can possibly travel that slow speed?

    Let me see your work.

  • Physics pls help -

    (2pie(1.67x10^-27)/ (1.60x10^-19)x .232= 2.83x10^-7
    .118/2.83x10^-7 wrong answer. I have entered three wrong answers and can not pass this if I can not get the right answer. Please help!

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