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A electron experiences a force (4.0hati ...

A electron experiences a force `(4.0hati +3.0hatj) xx 10^(-13)N` in a uniform magnetic field when its velocity is `2.5hak xx 10^(7)ms^(-1)` When the velocity is redirected and becomes `(1.5hati - 2.0hatj)xx10^(7) xx 10^(-7)` the magnetic force of the electron is zero. The magnetic field vectro `oversetrarr(B)` is .

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