how is the answer 80km/s instead of 71?
an alpha particle moves in a region where the magnetic field has a magnitude of 0.6T , the particle follows a helical path which has a pitch of 8mm and a radius of 205 mm what is the speed of this particle as it follows this path ?
- az_lenderLv 78 months agoBest Answer
r = mv/qB =>
The component of v perpendicular to the magnetic field is
rqB/m = (0.205m)(3.204 x 10^(-19)C)(0.6 T)/
(6.644 x 10^(-27) kg)
= (0.205)(3.204 x 10^8)(0.6) m/s]/6.644
= 5.93 x 10^6 m/s.
Then you must use Pythagorean Thm to deal with the "pitch."
Did you miscopy the info when you posted the question?