Two charged metal conducting spheres have charges -2mC and +4mC. They are brought in contact with each other. Since they are conductors, there will be a flow of charges. Determine with will be the charge on each sphere. -2mC +4mC В A Charge on A is 4mC and charge on B is -2mC Charge on A is 0 and charge on B is 2mC Both willl have equal charge of +1mC They both have equal charge of +3mC

A charge of -2.50 nC is placed at the origin of an xy-coordinate system, and a charge of 2.40 nC is placed on the y-axis at y= 4.30 cm a)if a third charge, of 5.00 nC, is now placed at the point x= 3.05 cm, y= 4.30 cm find the x and y components of the total force exerted on this charge by the other two charges. b) Find the magnitude of this force.express in newtons  c)Find the direction of this force. Express your answer in degrees.

A +5 nC point charge and a -10 nC point charge are 0.02 m apart.  (a) What is the strength of the Coulomb force on the +5 nC charge?  (b) What is the strength of the Coulomb force on the -10 nC charge?  (c) Is the -10 nC charge attracted to or repelled by the +5 nC charge  (d) If the distance between the charges is doubled to 0.04 m, what is the force on the +5 nC charge now?

A glass rod with a charge of  + 15.6 nC is held  2.50 cm from a piece of wool that is oppositely charged.  If the attractive force between the glass rod and wool is  - 3.50 X 10 -3 N,  what is the charge, in nanoCoulombs, on the piece of wool ?    (Ans:  - 15.6 nC)