Homework Help: physics

Posted by maria on Tuesday, April 19, 2011 at 10:08pm.

A proton moves perpendicularly to a mag-
netic field that has a magnitude of 3.09×10^−2 T.
The charge on a proton is 1.60×10−19 C.
What is the speed of the particle if the
magnitude of the magnetic force on it is 3.50*10^−14N?
Answer in units of m/s.

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