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Two particles are fixed on an x axis. Pa...

Two particles are fixed on an x axis. Particle 1 of charge `50 mu C` is located at x = - 20.0 cm, particle 2 of charge Q is located at x = 3.0 cm. Particle 3 of charge magnitude `20 mu C` is released from rest on the y axis y = 2.0 cm. What is the value of Q if the initial acceleration of particle 3 is in the positive direction of (a) the x axis and (b) the y axis ?

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(a) `-104 mu C`, (b) `69.4 mu C`
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