In the ever popular game from the future, Electrodisc, players can score double

Question

In the ever popular game from the future, Electrodisc, players can score double points by pushing a disc into another disc with the electric field generated by a third disc. The discs are by regulation 1 kg. All discs have the same shape and are made of the same conducting material. In the figure below, disc 1 is held in place, and disc 2 is held stationary 2.9 m from disc 1 by a player. The player then releases disc 2 10 m what is the initial magnitude o the acceleration im posed on the second disc? The charge on the on the third disc is neutral. rst disc is 1 7 m The charge on the second dis is· mC The charge m/s2 Later, discs 2 and 3 touch and charge is exchanged. How much charge is exchanged once the charges on each disc reach an equilibrium? After charge is exchanged, what is the direction of the force on disc 3 due to disc 2? O toward the left O toward the right upward downward

Explanation / Answer

a) a= F/ m= ( 9 x10^9 ) ( 1.7 x 10^-3) (1.9 x10^-3) / ( 2.9^2=) = 3,456 x 10^ 3 m/s^2

b) 1.9 x 10^0-3/ 2= 0.95 x 10^-3 C

c) towards right

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