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A uniform magnetic field of magnitude 1.43 T is in the positive z direction. Find the force exerted by the field on a proton for the following proton velocities.
= 4.6 x 106 m/s + 3.3 x 106 m/s
A) __pN i --> .76
B) __pN j --> -1.05
C) __pN k --> ??
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