physics
posted by Sandhya .
a) An infinite number of changes each equal to q are placed along the xaxis at x = 1, x = 2, x = 4, x = 8, . . . and so on. Find the potential and the esoteric at x = 0 due to this set of changes. What will be the potential and electric field if, in the above setup, the corrective charges have opposite sign?
(b) Two metal spheres, each of mass 1 gm and radius 0.5 cm are placed on a smooth, horizontal, insulated plate such that their centres are 15 cm apart. One is charged to a potential 500 volt and the other to 1000 volt. What is the velocity of each sphere when they drift away to a distance of 30 cm. between their centres?

a) An infinite number of changes each equal to q are placed along the xaxis at x = 1, x = 2, x = 4, x = 8, . . . and so on. Find the potential and the esoteric at x = 0 due to this set of changes. What will be the potential and electric field if, in the above setup, the corrective charges have opposite sign?
(b) Two metal spheres, each of mass 1 gm and radius 0.5 cm are placed on a smooth, horizontal, insulated plate such that their centres are 15 cm apart. One is charged to a potential 500 volt and the other to 1000 volt. What is the velocity of each sphere when they drift away to a distance of 30 cm. between their centres?
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