An electron with a speed of 8 × 106 m/s is projected along the positive, x-direction into...

An electron with a speed of 8 × 106 m/s is projected along the positive, x-direction into a medium containing a uniform magnetic flux density B = ( – T. Given that e = 1.6 × 10–19 C and the mass of an electron is me = 9.1 × 10–31 kg, determine the initial acceleration vector of the electron (at the moment it is projected into the medium).