Hello everyone, I have a concept problem im having a problem understanding(adsbygoogle = window.adsbygoogle || []).push({});

Assume the Earth's magnetic dipole moment is aligned with the earth's rotational axis, and the earth's magnetic field is cylindrically symmetric.

If i have a proton traveling in orbit to the earth at a height of 7950000 meter where the Earth's magetic field has an intensity of 5.45 X 10^-8 T at a speed of 41890384.6154 m/s

How do I determine the way the proton's velocity is traveling?

I have the choices of

1. an equatorial orbit from East to West.

2.a polar orbit.

3. an equatorial orbit from West to East.

I believe it would be an equatorial orbit as it is perpendicular to the Earth's magnetic field, however I am not complete sure and even if I was right, how would I determine if it orbits west to east or east to west?

Any help or tip would be appreciated, thx

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# Homework Help: Charged particle in magetic field problem

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