An electron is near a positive ion of charge +9e and a negative ion of charge −8e (see the figure below). (Take a = 4.28 µm, b = 3.88 µm, and ? = 61.5°.) (a) Find the magnitude and direction of the resultant force on the electron. (Let right be the +x-direction. Measure the angle counter-clockwise from the +x-axis.) (b) Find the magnitude and direction of the electron's instantaneous acceleration (Let right be the +x-direction. Measure the angle counter-clockwise from the +x-axis.)

An electron is near a positive ion of charge +9e and a negative ion of charge −8e (see the figure below). (Take a = 4.28 µm, b = 3.88 µm, and ? = 61.5°.) (a) Find the magnitude and direction of the resultant force on the electron. (Let right be the +x-direction. Measure the angle counter-clockwise from the +x-axis.) (b) Find the magnitude and direction of the electron's instantaneous acceleration (Let right be the +x-direction. Measure the angle counter-clockwise from the +x-axis.)