In nanoscale electronics, electrons can be treated like billiard balls. The figure shows a simple device currently under study in which an electron elastically collides with a rigid wall (a ballistic electron transistor). The green bars represent electrodes that can apply a vertical force of 8.0 10-13 N to the electrons. If an electron initially has velocity components vx = 1.00 · 105 m/s and vy = 0 and the wall is at 45°, the deflection angle θD is 90°.How long does the vertical force from the electrodes need to be applied to obtain a deflection angle of 120°?

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