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The electrons in the beam of a television tube have a kinetic energy of  2.37 × 10...

The electrons in the beam of a television tube have a kinetic energy of  2.37 × 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  2.73 × 10 -5 T.  What is the acceleration of an electron due to this field component?

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