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Q#1 Create the free-body diagram for particle 3.(just need free body diagram for particle 3) Three...

Q#1

Create the free-body diagram for particle 3.(just need free body diagram for particle 3)

Three particles are fixed on an x axis. Particle 1 of charge q1 is at x = - a, and particle 2 of charge q2 is at x = + a. If their net electrostatic force on particle 3 of charge + Q is to be zero, what must be the ratio q1/q2 when particle 3 is at x = 1.50a? Important: Assume that the charge of particle 1 is positive.

Q#2

Create the free-body diagram for particle 3. Please use the blue vector to specify forces and the pink vector for acceleration.

Particle 1 of 30 nC and particle 2 of - 40 nC are held fixed on an x axis, at the origin and at x = 72 cm, respectively. Particle 3 of 42 μC is released from rest at x = 28 cm. If the initial acceleration of particle 3 has a magnitude of 100 km/s2, what is its mass?

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Answer #1

Force betwe w chares i and 2 e«n 3f both same siah- CU) F 222. The Force。 순 due to I.5ato (2-5a)2 (.25 a 2 The Force on +& dueto k貝22 0.25 a 2 (o.5)2 So F1 and F2 should be oppositemdu rection should be-ve for-Ri Takin,magnitude F1=F k12 C.25a2 025a 0.25 ㄥ --ㄧ -25 2 o 25 ma hitude of 11 2S -2-523 = 42 nc 2 e mag ni tudt of charges 22-2844cn, 044h The force oh pae3 due to barticle i- 3 (o-28) 2 万, 0-14448 Newton Th Force on partldle 3 due to partice 2 Co.44)1- O.0RNewtuhThe Net Force oh partlcle3) F F3 F32 o, 14448 t o. 07801 a I> accJe roHon of partic!e (3) 3 a- 1oos Honal Fore m= 0.2224 g xi

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