Home
Class 11
PHYSICS
Small identical balls with equal charges...

Small identical balls with equal charges of magnitude 'q' each are fixed at the vertices of a regular 20019-gon (a polygon of 2019 sides) with side `'a'=4 `. At a certain instant, one of the balls is released and a sufficiently long time interval later, the ball adjacent to the first released ball is freed. The kinetic energies of the released balls are found to differ by `K=9xx10^(9) J` at a sufficiently large distance from the polygon. determine the charge q in mC.

Text Solution

Verified by Experts

The correct Answer is:
`sqrt(4pi in_(0)Ka)`
Promotional Banner

Topper's Solved these Questions

  • MISCELLANEOUS

    ALLEN|Exercise Exercise-05(A)|35 Videos
  • MISCELLANEOUS

    ALLEN|Exercise Exercise-05(B)|19 Videos
  • MISCELLANEOUS

    ALLEN|Exercise Exersice-04[A]|34 Videos
  • KINEMATICS (MOTION ALONG A STRAIGHT LINE AND MOTION IN A PLANE)

    ALLEN|Exercise BEGINNER S BOX-7|8 Videos
  • PHYSICAL WORLD, UNITS AND DIMENSIONS & ERRORS IN MEASUREMENT

    ALLEN|Exercise EXERCISE-IV|8 Videos

Similar Questions

Explore conceptually related problems

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.

A ball A is thrown up vertically with a speed u and at the same instant another ball B is released from a height h . At time t , the speed A relative to B is

A 500 g ball is released from a height of 4m. Each time it makes contact with the ground, it loses 25% of its kinetic energy. Find the kinetic energy it possess just after the 3^(rd) hit

Ball A is thrown up vertically with speed 10 m/s . At the same instant another ball B is released from rest at height h . At time t , the speed of A relative to B is

A bag contains 9 red and 12 white balls one ball is drawn at random. Find the probability that the ball drawn is red.

A ball is thrown up with a certain velocity at anangle theta to the horizontal. The kinetic energy KE of the ball varies with horizontal displacements as:

A boy throws n balls per second at regular time intervals. When the first ball reaches the maximum height he throws the second one vertically up. The maximum height reached by each ball is

A boy throws n balls per second at regular time intervals.When the first ball reaches the maximum height he throws the second one vertically up .The maximum height reached by each ball is

A solid ball of mass 'm' is released on a rough fixed inclined plane from height H . The ball will perform pure rolling on the inclined plane. Then

A cricket ball is hit for a six the bat at an angle of 45^(@) to the horizontal with kinetic energy K. At the highest point, the kinetic energy of the ball is