Hey guys i really need some help with the following 2 questions....thanks :) Thr

Question

Hey guys i really need some help with the following 2 questions....thanks :)

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

Three identical metal spheres are hung from a ceiling on rigid non-conducting rods. Sphere 1, sphere 2, and sphere 3 have charges 25 mu C, ?44 mu C, and 54 mu C, respectively. Each sphere is separated by 11 cm. 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? updown leftrightno direction (zero magnitude) 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 3.5 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 1.1 mC. The charge on the second disc is 1.3 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? toward the lefttoward the right upwarddownward

Explanation / Answer

1)

a)

Fnet = F23-F21 = 9*10^9*44*10^-6*54*10^-6/0.11^2-9*10^9*44*10^-6*25*10^-6/0.11^2 = 949.09 N

b)

Direction : right

2)

a = F/m = (9*10^9*1.1*10^-3*1.3*10^-3/3.5^2)/1 = 1050.6122449 m/s^2

charge exchanged = 1.3*10^-3/2 = 0.00065 C = 0.65 mC

direction : toward the right.... ...(same charges repel)

Related Questions

Navigate

• Browse (All)
• Browse H
• Subjects

---