The electrons in the beam of a television tube have a kinetic energy of 2. 53×10⁻¹⁵ 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. 59×10⁻⁵ T. What is the acceleration of an electron due to this field component? Number Units