An electron is a subatomic particle ( m = 9.11 10 -31 kg) that is subject to ele

Question

An electron is a subatomic particle (m = 9.11  10-31 kg) that is subject to electric forces. An electron moving in the +x direction accelerates from an initial velocity of +5.66  105 m/s to a final velocity of +1.91  106 m/s while traveling a distance of 0.034 m. The electron's acceleration is due to two electric forces parallel to the x axis: 1 = +6.75  10-17 N, and 2, which points in the -x direction. Find the magnitudes of the net force acting on the electron and the electric force 2.

Explanation / Answer

v^2 - u^2 = 2as

a = `4.89*10^13 m/s^&2

Fnet = ma = +4.46*10^-17 N

F2 = Fnet-F1 = -2.29*10^-17 N

Magnitude of F2 = 2.29*10^-17 N

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