Hello, I am having difficulty with these two Physics problems. Here is an image

Question

Hello, I am having difficulty with these two Physics problems. Here is an image of the problems. If anyone can please solve the problem and explain the answer, I would sincerely appreciate it.

I will award points and positively rate the individual who can answer these two problems successfully to their complete entirety providing all answers. Thank you so much in advance and have a wonderful day.

1. Three identical metal spheres are hung from a ceiling on rigid non-conducting rods. Sphere 1, sphere 2, and sphere 3 have charges

2. 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...

Three identical metal spheres are hung from a ceiling on rigid non-conducting rods. Sphere 1, sphere 2, and sphere 3 have charges 31 pC, -50 pC, and 54 pC, respectively. Each sphere is separated by 11cm. What is the net electric force on the middle sphere due to spheres 1 and 3? (Enter the magnitude only.) What is the direction of the net electric force? In the ever popular game from the future, Electro disc, 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 2.5 m from disc 1 by a player. The player then releases disc 2. What is the initial magnitude of the acceleration imposed on the second disc? The charge on the first disc is 1.5 mC. The charge on the second disc is 1.5 mC. The charge on the third disc is neutral. 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?

Explanation / Answer

1.a)same charges repel each other and opposite charges attract each other.

so 1 and 2 will attract and as well 2,3 will attract each other.

net force magnitude=855.37 N

b)direction=right

2)As 3rd disc is neutral,there is no force on disc 2 due to disc 3.

as charges on disk 1 and 2 are same,they will repel.

so force=9*10^9*1.5*10^(-3)*1.5*10^(-3)/2.5^2=3240 N

acceleration=3240/1=3240 m/s^2

b)0.75 mC

c)towards right

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