Answer:
Force between two identical conducting ball will be
Explanation:
We have given there is two identical conducting small spheres having charge
and 
Distance between centers of the ball is 0.290 m
So r = 0.290 m
We have to fond the electric force between the balls
According to Coulomb's law force between two charges is given by

So force 
So force between two identical conducting ball will be 
Answer:
Explanation:
The current through the resistor is 0.83 A
.
Part b
The current through resistor is 0.53 A
.
Part c
The current through resistor is 0.30 A
What are you trying to here?
Chemical change, we can't change the bread back the way it was before
Hope this helps!