Q. Object A, which has been charged to + 10 nC, is at the origin. Object B, which has been charged to - 30 nC, is at( x,y ) = ( 0.0 cm,2.0 cm ).
What is the magnitude of the electric force on object A? on object B?
Q. A charge particle of mass .0020kg is subjected to a 6.0T magnetic field which is acts as a right angle to its motion. if the particle moves in a circle of radius .20m at a speed of 5.0 m/s. what is the magntiude of the charge on the particle?