[" 15.A pith-ball A of mass "9times10^(-5)kg" carries a charge of "+5 mu C" ."],[" What must be the magnitude and sign of the charge on a "],[" pith-ball "B" held "2cm" directly above the pith-ball A such that "],[" the pith-ball A remains stationary? "]

A pith-ball A of mass 9xx10^(-5) kg carries a charge of 5 mu C. What must be the magnitude and sign of the charge on a pith-ball B held 2 cm directly above the pith-ball A, such that the pith-ball A remains stationary ?

A pith-ball A of mass 9xx10^-5 kg carries a chargeof +5muc . What must be the magnitude and sign of the charge on a pith-ball B held 2 cm directly above the pith-ball . A such that the pith-ball. A remains stationary?

A free ptih-ball of 8 g carries a positive charge of 5xx 10^-8 C. What must be the nature and magntiude of charge that should be given to a second pith-ball fixed 5 cm vertically below the former pith-ball so that the upper pith-ball is stationary?

A pith ball of mass 9 xx 10^(-5) kg carries a charge of 5muC . What must be charge in another pith ball placed directly 2 cm above the given pith ball such that they held in equilibrium?

A pith ball of mass 9 xx 10^(-5) kg carries a charge of 5muC . What must be charge in another pith ball placed directly 2 cm above the given pith ball such that they held in equilibrium?

Write the salient features of Coulomb's law.A free pith - ball of 8 g carries a positive of 5 xx 10 ^(-8)C What must be the nature and magnitude of charge that should be given to ta second pith- ball fixed 5 cm vertically below the former pith-ball , so that the upper pith-ball is stationary ?

A free pith ball of mass 6g carries a positive charge of (1//3) xx 10^(-7) C . What is the nature and magnitude of charge that should be given to a second pith ball fixed 5 cm vertically below the former pith ball so that the upper pith ball is stationary.