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Protons having a kinetic energy of 8.6eV are moving in the positive x direction and enter a magnetic field B=0.0390 (k hat)T directed out of the plane of the page and extending from x=0 to x=1.08. Ignore relativistic effects

a) calculate the Y component of the protons momentum as they leave the magnetic field

Well i can find the velocity from the kinetic energy, but how can i find the momentum of the Y component when it leaves the magnetic field??

b) find the angle (alpha) b/w the initial velocity vector of the protom beam and the velocity vectr after the beam emerges from the field...

How could u find this angle? i hvae no idea

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# Homework Help: Magnetic field and momentum

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