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A small metal sphere, carrying a net charge of q1 = -280 μC. is held in a stationary position by insulating supports.


A small metal sphere, carrying a net charge of q1 = -280 μC. is held in a stationary position by insulating supports. A second small metal sphere, with a net charge of q2=7.80μC and mass 1.50 g, is projected toward qi, when the two spheres are 0.800 m apart, q2. is moving toward q1 with speed 22.0 m/s. Assume that the two spheres can be treated as point charges You can ignore the force of gravity. (hint: use conservation of energy) 


(a). What is the speed of q2 when the spheres are 0.400 m apart? 

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(b). How close does q2 get to q1? What would happen afterward? 

(c). What is the final speed of the ball when it is at infinity? 

(d). What is the electric potential created by q1 at r = 0.400 m?


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