Question

A particle with a +5.0 µC charge and a kinetic energy of 0.090 J is fired into a uniform magnetic field of magnitude 0.30 T. If the particle moves in a circular path of radius 3.0 m, determine its mass.
bobpursley
find the force for the charge with that velocity in that magnetic field, you have an equation for that.

Then centripetal force equals that force above, solve for mass

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