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The electrons in the beam of a television tube have a kinetic energy of 2.50 10-15 J. Initially, the electrons move horizontally from west to east. The vertical component of the earth's magnetic field points down, toward the surface of the earth, and has a magnitude of 3.00 10-5 T.

(a) In what direction are the electrons deflected by this field component? due south, due west, due east, due north

(b) What is the magnitude of the acceleration of an electron in part (a)? m/s2

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