Two identical metal balls with like but different magnitude of charges are brought in contact.The charge of one of the balls increased by 40% .The ratio of initial charge on first ball to second ball is N,then N=

Two identical small equally charged conducting balls are suspended from long threads secured at one point. The charges and masses of the balls are such that they are in equilibrium when the distance between them is a(the length of thread Lgtgta ). Then one of the balls is discharged. what will be the distance b(bltltL) between the balls when equilibrium is restored?

Two identical balls are dropped from the same height onto a hard surface, the second ball being released exactly when the first ball bollides with the surface. If the first ball has made two more collisions by the time the second one collides. Then the coefficient of restitution between the ball and the surface satisfies :

When a negatively charged ebonite rod is brought near a negatively charged and freely suspended ball, then the ball :

Two identical conducting balls A and B have charges- Q and + 3Q respectively. They are brought in contact with each other and then separated by a distance d part. Find the nature of the Coulomb force between them.

Two identical billiard balls striks a rigid wall with the same speed but at different angles , and get reflected without any change in speed , as shown in Fig . What is (i) the direction of the force on the wall due to each ball ? (ii) the ratio of the magnitudes of impulses imparted to the balls by the wall ?

Two balls of charges q_(1) and q_(2) initially have a velocity of the same nagnitude and direction. After a unform electric field has been applied for a certain time. The direction of the first ball changes by 60^(@) and the velocity magnitude is reduced by half. The direction ofvelocity of the second ball changes by 90^(@) . In whata ratio will hte velociyt of the second ball change? Determine, the magnitude of the charge to mass ratio of the ball if it is equal to alpha_(1) for the firt ball. Ignore the electrostatic interactin between the balls. ,

A conducting ball is positively charged and another positive point charge is brought closer to the ball.

Small identical balls with equal charges are fixed at the vertices of a regular polygon of N sides, each of length d. At a certain instant, one of the ball is released. After long time interval, the adjacent ball to the previous one is released. The difference in kinetic energies of the two released balls is K at a sufficiently long distance from the polygon.

Two small identical conducting balls A and B of charges +10 mu C and +30 mu C respectively, are kept at a separation of 50 cm. these balls have been connected by a wire for a short time The final charge on each of the balls A and B and force of interaction will be

Two small identical conducting balls A and B of charges +10 mu C and +30 mu C respectively, are kept at a sepration of 50 cm. these balls have beeen connected by a wire for a short time The final charge on each of the balls A and B will be