Two identical conducting spheres are placed with their centers0.3m apart. One is

Question

Two identical conducting spheres are placed with their centers0.3m apart. One is given a charge of 12 x 10^-9 C and the other charge of -18 x 10^-9 C. a. Find the electrostatic force exerted by one sphere on theother. b. The spheres are connected by a conducting wire. Afterequilibrium has occurred, find the electrostatic force between thetwo spheres. The answer for a is 2.2 x 10^-5 N (attraction) The answer for b is 9 x 10^-7 N (repulsion) I just don't know how to get to these answers Please provide a step-by-step explanation of how to get theseanswers. Two identical conducting spheres are placed with their centers0.3m apart. One is given a charge of 12 x 10^-9 C and the other charge of -18 x 10^-9 C. a. Find the electrostatic force exerted by one sphere on theother. b. The spheres are connected by a conducting wire. Afterequilibrium has occurred, find the electrostatic force between thetwo spheres. The answer for a is 2.2 x 10^-5 N (attraction) The answer for b is 9 x 10^-7 N (repulsion) I just don't know how to get to these answers Please provide a step-by-step explanation of how to get theseanswers.

Explanation / Answer

(a)              F = k q1 q2 / r2    N                  = ( 9  x 109 * 12 x10-9 * -18 x 10-9 ) /(0.3)2                   =  2.16 x 10-5   N                  = 2.2 x 10-5   N (b)           Whenthe sphares are connected , by adding  q =   3 x 10-9   C equilibrium of the charge on two spheres can be obtained.             F   =   k q2 /r2    N                     =   ( 9  x 109 * (3 x 10-9 )2 ) /(0.3)2                     =   900   x 10-9 N                      =  9 x 10-7   N Hope this helps u!

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