1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: Proton speed needed to circle the earth

  1. Jun 30, 2009 #1
    1. The problem statement, all variables and given/known data

    Assume that Earth’s magnetic field is every-
    where perpendicular to the path of a proton
    and that Earth’s magnetic field has an inten-
    sity of 4.19 × 10−8 T.
    What speed would a proton need to achieve
    in order to circle Earth 1550.0 km above the
    magnetic equator?
    Answer in units of m/s.

    2. Relevant equations

    r=(r earth + r given in the question )

    3. The attempt at a solution

    i solved for v but im not sure if what im doing is correct
  2. jcsd
  3. Jun 30, 2009 #2


    User Avatar
    Homework Helper

    You are in right track.
  4. Jun 30, 2009 #3
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook