1) Two small nonconducting spheres have a total charge of 90.0?C .
When placed 1.16m apart, the force each exerts on the other is 10.8N and is repulsive. What is the charge on each?
What if the force were attractive?
2) A charge of 4.65mC is placed at each corner of a square 0.100 m on a side.
Determine the magnitude of the force on each charge
Determine the direction of the force on each charge. Assume that the positive x-axis is directed to the right.
3) A charge Q is transferred from an initially uncharged plastic ball to an identical ball 11cm away. The force of attraction is then 19mN .
How many electrons were transferred from one ball to the other?
4) Calculate the electric field (magnitude and direction) at the upper right corner of a square 1.22 m on a side if the other three corners are occupied by 2.20×10?6C charges. Assume that the positive x-axis is directed to the right.
FInd ? (counterclockwise from the x-direction).